Short array syntax

apps/advanced/backend/config/AppAsset.php

@@ -17,13 +17,10 @@ class AppAsset extends AssetBundle
 {
 	public $basePath = '@webroot';
 	public $baseUrl = '@web';
-	public $css = array(
+	public $css = ['css/site.css'];
-		'css/site.css',
+	public $js = [];
-	);
+	public $depends = [
-	public $js = array(
-	);
-	public $depends = array(
 		'yii\web\YiiAsset',
 		'yii\bootstrap\BootstrapAsset',
-	);
+	];
 }

apps/advanced/backend/config/main.php

@@ -8,35 +8,34 @@ $params = array_merge(
 	require(__DIR__ . '/params-local.php')
 );
 
-return array(
+return [
 	'id' => 'app-backend',
 	'basePath' => dirname(__DIR__),
 	'vendorPath' => dirname(dirname(__DIR__)) . '/vendor',
-	'preload' => array('log'),
+	'preload' => ['log'],
 	'controllerNamespace' => 'backend\controllers',
-	'modules' => array(
+	'modules' => [],
-	),
+	'components' => [
-	'components' => array(
+		'request' => [
-		'request' => array(
 			'enableCsrfValidation' => true,
-		),
+		],
 		'db' => $params['components.db'],
 		'cache' => $params['components.cache'],
-		'user' => array(
+		'user' => [
 			'identityClass' => 'common\models\User',
-		),
+		],
-		'log' => array(
+		'log' => [
 			'traceLevel' => YII_DEBUG ? 3 : 0,
-			'targets' => array(
+			'targets' => [
-				array(
+				[
 					'class' => 'yii\log\FileTarget',
-					'levels' => array('error', 'warning'),
+					'levels' => ['error', 'warning'],
-				),
+				],
-			),
+			],
-		),
+		],
-		'errorHandler' => array(
+		'errorHandler' => [
 			'errorAction' => 'site/error',
-		),
+		],
-	),
+	],
 	'params' => $params,
-);
+];

apps/advanced/backend/config/params.php

@@ -1,4 +1,4 @@
 <?php
-return array(
+return [
 	'adminEmail' => 'admin@example.com',
-);
+];

apps/advanced/console/migrations/m130524_201442_init.php

@@ -9,7 +9,7 @@ class m130524_201442_init extends \yii\db\Migration
 		// MySQL-specific table options. Adjust if you plan working with another DBMS
 		$tableOptions = 'CHARACTER SET utf8 COLLATE utf8_general_ci ENGINE=InnoDB';
 
-		$this->createTable('tbl_user', array(
+		$this->createTable('tbl_user', [
 			'id' => Schema::TYPE_PK,
 			'username' => Schema::TYPE_STRING.' NOT NULL',
 			'auth_key' => Schema::TYPE_STRING.'(32) NOT NULL',
@@ -21,7 +21,7 @@ class m130524_201442_init extends \yii\db\Migration
 			'status' => 'tinyint NOT NULL DEFAULT 10',
 			'create_time' => Schema::TYPE_INTEGER.' NOT NULL',
 			'update_time' => Schema::TYPE_INTEGER.' NOT NULL',
-		), $tableOptions);
+		], $tableOptions);
 	}
 
 	public function down()

apps/advanced/environments/dev/backend/config/main-local.php

@@ -4,8 +4,8 @@ return [
 		//'debug',
 	],
 	'modules' => [
-//		'debug' => array(
+//		'debug' => [
 //			'class' => 'yii\debug\Module',
-//		),
+//		],
 	],
 ];

apps/advanced/environments/dev/frontend/config/main-local.php

@@ -4,8 +4,8 @@ return [
 		//'debug',
 	],
 	'modules' => [
-//			'debug' => array(
+//			'debug' => [
 //				'class' => 'yii\debug\Module',
-//			),
+//			],
 	],
 ];

apps/advanced/environments/index.php

@@ -6,14 +6,14 @@
  * format:
  *
  * ```php
- * return array(
+ * return [
- *     'environment name' => array(
+ *     'environment name' => [
  *         'path' => 'directory storing the local files',
- *         'writable' => array(
+ *         'writable' => [
  *             // list of directories that should be set writable
- *         ),
+ *         ],
- *     ),
+ *     ],
- * );
+ * ];
  * ```
  */
 return [

apps/benchmark/index.php

@@ -4,15 +4,15 @@ defined('YII_DEBUG') or define('YII_DEBUG', false);
 
 require(__DIR__ . '/protected/vendor/yiisoft/yii2/yii/Yii.php');
 
-$config = array(
+$config = [
 	'id' => 'benchmark',
 	'basePath' => __DIR__ . '/protected',
-	'components' => array(
+	'components' => [
-		'urlManager' => array(
+		'urlManager' => [
 			'enablePrettyUrl' => true,
-		),
+		],
-	)
+	],
-);
+];
 
 $application = new yii\web\Application($config);
 $application->run();

build/build

@@ -13,9 +13,9 @@ defined('STDIN') or define('STDIN', fopen('php://stdin', 'r'));
 
 require(__DIR__ . '/../framework/yii/Yii.php');
 
-$application = new yii\console\Application(array(
+$application = new yii\console\Application([
 	'id' => 'yii-build',
 	'basePath' => __DIR__,
 	'controllerNamespace' => 'yii\build\controllers',
-));
+]);
 $application->run();

build/controllers/ClassmapController.php

@@ -32,7 +32,7 @@ class ClassmapController extends Controller
 		if ($mapFile === null) {
 			$mapFile = YII_PATH . '/classes.php';
 		}
-		$options = array(
+		$options = [
 			'filter' => function ($path) {
 				if (is_file($path)) {
 					$file = basename($path);
@@ -42,18 +42,18 @@ class ClassmapController extends Controller
 				}
 				return null;
 			},
-			'only' => array('.php'),
+			'only' => ['.php'],
-			'except' => array(
+			'except' => [
 				'Yii.php',
 				'BaseYii.php',
 				'/debug/',
 				'/console/',
 				'/test/',
 				'/gii/',
-			),
+			],
-		);
+		];
 		$files = FileHelper::findFiles($root, $options);
-		$map = array();
+		$map = [];
 		foreach ($files as $file) {
 			if (($pos = strpos($file, $root)) !== 0) {
 				die("Something wrong: $file\n");
@@ -76,9 +76,9 @@ class ClassmapController extends Controller
  * @license http://www.yiiframework.com/license/
  */
 
-return array(
+return [
 $map
-);
+];
 
 EOD;
 		if (is_file($mapFile) && file_get_contents($mapFile) === $output) {

build/controllers/PhpDocController.php

@@ -44,7 +44,7 @@ class PhpDocController extends Controller
 			$root = YII_PATH;
 		}
 		$root = FileHelper::normalizePath($root);
-		$options = array(
+		$options = [
 			'filter' => function ($path) {
 				if (is_file($path)) {
 					$file = basename($path);
@@ -54,16 +54,16 @@ class PhpDocController extends Controller
 				}
 				return null;
 			},
-			'only' => array('.php'),
+			'only' => ['.php'],
-			'except' => array(
+			'except' => [
 				'BaseYii.php',
 				'Yii.php',
 				'/debug/views/',
 				'/requirements/',
 				'/gii/views/',
 				'/gii/generators/',
-			),
+			],
-		);
+		];
 		$files = FileHelper::findFiles($root, $options);
 		$nFilesTotal = 0;
 		$nFilesUpdated = 0;
@@ -89,7 +89,7 @@ class PhpDocController extends Controller
 
 	public function globalOptions()
 	{
-		return array_merge(parent::globalOptions(), array('updateFiles'));
+		return array_merge(parent::globalOptions(), ['updateFiles']);
 	}
 
 	protected function updateClassPropertyDocs($file, $className, $propertyDoc)
@@ -136,7 +136,7 @@ class PhpDocController extends Controller
 			$start = $ref->getStartLine() - 2;
 			$docStart = $start - count(explode("\n", $oldDoc)) + 1;
 
-			$newFileContent = array();
+			$newFileContent = [];
 			$n = count($fileContent);
 			for($i = 0; $i < $n; $i++) {
 				if ($i > $start || $i < $docStart) {
@@ -253,16 +253,15 @@ class PhpDocController extends Controller
 				'[\s\n]{2,}public function [g|s]et(?<name>\w+)\(((?:,? ?\$\w+ ?= ?[^,]+)*|\$\w+(?:, ?\$\w+ ?= ?[^,]+)*)\)#',
 				$class['content']);
 			$acrs = array_merge($properties, $gets, $sets);
-			//print_r($acrs); continue;
 
-			$props = array();
+			$props = [];
 			foreach ($acrs as &$acr) {
 				$acr['name'] = lcfirst($acr['name']);
 				$acr['comment'] = trim(preg_replace('#(^|\n)\s+\*\s?#', '$1 * ', $acr['comment']));
-				$props[$acr['name']][$acr['kind']] = array(
+				$props[$acr['name']][$acr['kind']] = [
 					'type' => $acr['type'],
 					'comment' => $this->fixSentence($acr['comment']),
-				);
+				];
 			}
 
 			ksort($props);
@@ -299,12 +298,12 @@ class PhpDocController extends Controller
 				$phpdoc .= " *\n";
 			}
 		}
-		return array($className, $phpdoc);
+		return [$className, $phpdoc];
 	}
 
 	protected function match($pattern, $subject)
 	{
-		$sets = array();
+		$sets = [];
 		preg_match_all($pattern . 'suU', $subject, $sets, PREG_SET_ORDER);
 		foreach ($sets as &$set)
 			foreach ($set as $i => $match)

docs/api/base/Component.md

@@ -25,8 +25,8 @@ In the above, an anonymous function is attached to the "update" event of the pos
 the following types of event handlers:
 
 - anonymous function: `function($event) { ... }`
-- object method: `array($object, 'handleAdd')`
+- object method: `[$object, 'handleAdd']`
-- static class method: `array('Page', 'handleAdd')`
+- static class method: `['Page', 'handleAdd']`
 - global function: `'handleAdd'`
 
 The signature of an event handler should be like the following:
@@ -41,9 +41,9 @@ You can also attach a handler to an event when configuring a component with a co
 The syntax is like the following:
 
 ~~~
-array(
+[
     'on add' => function($event) { ... }
-)
+]
 ~~~
 
 where `on add` stands for attaching an event to the `add` event.
@@ -69,11 +69,11 @@ One can also attach a behavior to a component when configuring it with a configu
 following:
 
 ~~~
-array(
+[
-    'as tree' => array(
+    'as tree' => [
         'class' => 'Tree',
-    ),
+    ],
-)
+]
 ~~~
 
 where `as tree` stands for attaching a behavior named `tree`, and the array will be passed to [[\Yii::createObject()]]

docs/api/base/Object.md

@@ -50,12 +50,12 @@ In order to ensure the above life cycles, if a child class of Object needs to ov
 it should be done like the following:
 
 ~~~
-public function __construct($param1, $param2, ..., $config = array())
+public function __construct($param1, $param2, ..., $config = [])
 {
     ...
     parent::__construct($config);
 }
 ~~~
 
-That is, a `$config` parameter (defaults to `array()`) should be declared as the last parameter
+That is, a `$config` parameter (defaults to `[]`) should be declared as the last parameter
 of the constructor, and the parent implementation should be called at the end of the constructor.

docs/api/db/ActiveRecord-find.md

@@ -8,7 +8,7 @@ $customers = Customer::find()->all();
 
 // find all active customers and order them by their age:
 $customers = Customer::find()
-    ->where(array('status' => 1))
+    ->where(['status' => 1])
     ->orderBy('age')
     ->all();
 
@@ -16,11 +16,11 @@ $customers = Customer::find()
 $customer = Customer::find(10);
 
 // the above is equivalent to:
-$customer = Customer::find()->where(array('id' => 10))->one();
+$customer = Customer::find()->where(['id' => 10])->one();
 
 // find a single customer whose age is 30 and whose status is 1
-$customer = Customer::find(array('age' => 30, 'status' => 1));
+$customer = Customer::find(['age' => 30, 'status' => 1]);
 
 // the above is equivalent to:
-$customer = Customer::find()->where(array('age' => 30, 'status' => 1))->one();
+$customer = Customer::find()->where(['age' => 30, 'status' => 1])->one();
 ~~~

docs/api/db/ActiveRecord.md

@@ -40,18 +40,18 @@ instance which serves as the DB connection. Usually this component is configured
 via application configuration like the following:
 
 ~~~
-return array(
+return [
-	'components' => array(
+	'components' => [
-		'db' => array(
+		'db' => [
 			'class' => 'yii\db\Connection',
 			'dsn' => 'mysql:host=localhost;dbname=testdb',
 			'username' => 'demo',
 			'password' => 'demo',
 			// turn on schema caching to improve performance
 			// 'schemaCacheDuration' => 3600,
-		),
+		],
-	),
+	],
-);
+];
 ~~~
 
 
@@ -70,13 +70,13 @@ The followings are some examples,
 ~~~
 // to retrieve all *active* customers and order them by their ID:
 $customers = Customer::find()
-	->where(array('status' => $active))
+	->where(['status' => $active])
 	->orderBy('id')
 	->all();
 
 // to return a single customer whose ID is 1:
 $customer = Customer::find()
-	->where(array('id' => 1))
+	->where(['id' => 1])
 	->one();
 
 // or use the following shortcut approach:
@@ -88,7 +88,7 @@ $customers = Customer::findBySql($sql)->all();
 
 // to return the number of *active* customers:
 $count = Customer::find()
-	->where(array('status' => $active))
+	->where(['status' => $active])
 	->count();
 
 // to return customers in terms of arrays rather than `Customer` objects:
@@ -158,7 +158,7 @@ $customer = Customer::find($id);
 $customer->delete();
 
 // to increment the age of all customers by 1
-Customer::updateAllCounters(array('age' => 1));
+Customer::updateAllCounters(['age' => 1]);
 ~~~
 
 
@@ -175,7 +175,7 @@ class Customer extends \yii\db\ActiveRecord
 {
 	public function getOrders()
 	{
-		return $this->hasMany('Order', array('customer_id' => 'id'));
+		return $this->hasMany('Order', ['customer_id' => 'id']);
 	}
 }
 
@@ -183,7 +183,7 @@ class Order extends \yii\db\ActiveRecord
 {
 	public function getCustomer()
 	{
-		return $this->hasOne('Customer', array('id' => 'customer_id'));
+		return $this->hasOne('Customer', ['id' => 'customer_id']);
 	}
 }
 ~~~
@@ -223,8 +223,8 @@ class Customer extends \yii\db\ActiveRecord
 {
 	public function getBigOrders($threshold = 100)
 	{
-		return $this->hasMany('Order', array('customer_id' => 'id'))
+		return $this->hasMany('Order', ['customer_id' => 'id'])
-			->where('subtotal > :threshold', array(':threshold' => $threshold))
+			->where('subtotal > :threshold', [':threshold' => $threshold])
 			->orderBy('id');
 	}
 }
@@ -244,8 +244,8 @@ class Order extends \yii\db\ActiveRecord
 {
 	public function getItems()
 	{
-		return $this->hasMany('Item', array('id' => 'item_id'))
+		return $this->hasMany('Item', ['id' => 'item_id'])
-			->viaTable('tbl_order_item', array('order_id' => 'id'));
+			->viaTable('tbl_order_item', ['order_id' => 'id']);
 	}
 }
 ~~~
@@ -259,12 +259,12 @@ class Order extends \yii\db\ActiveRecord
 {
 	public function getOrderItems()
 	{
-		return $this->hasMany('OrderItem', array('order_id' => 'id'));
+		return $this->hasMany('OrderItem', ['order_id' => 'id']);
 	}
 
 	public function getItems()
 	{
-		return $this->hasMany('Item', array('id' => 'item_id'))
+		return $this->hasMany('Item', ['id' => 'item_id'])
 			->via('orderItems');
 	}
 }
@@ -331,11 +331,11 @@ $orders = $customer->getOrders()->where('subtotal>100')->all();
 
 // eager loading: SELECT * FROM tbl_customer LIMIT 10
                   SELECT * FROM tbl_order WHERE customer_id IN (1,2,...) AND subtotal>100
-$customers = Customer::find()->limit(100)->with(array(
+$customers = Customer::find()->limit(100)->with([
 	'orders' => function($query) {
 		$query->andWhere('subtotal>100');
 	},
-))->all();
+])->all();
 ~~~
 
 
@@ -437,7 +437,7 @@ class Customer extends \yii\db\ActiveRecord
 	 */
 	public static function olderThan($query, $age = 30)
 	{
-		$query->andWhere('age > :age', array(':age' => $age));
+		$query->andWhere('age > :age', [':age' => $age]);
 	}
 }
 

docs/guide/active-record.md

@@ -54,16 +54,16 @@ By default, ActiveRecord assumes that there is an application component named `d
 [[Connection]] instance. Usually this component is configured in application configuration file:
 
 ```php
-return array(
+return [
-	'components' => array(
+	'components' => [
-		'db' => array(
+		'db' => [
 			'class' => 'yii\db\Connection',
 			'dsn' => 'mysql:host=localhost;dbname=testdb',
 			'username' => 'demo',
 			'password' => 'demo',
-		),
+		],
-	),
+	],
-);
+];
 ```
 
 Please read the [Database basics](database-basics.md) section to learn more on how to configure and use database connections.
@@ -82,7 +82,7 @@ the same set of flexible and powerful DB query methods. The following examples d
 ```php
 // to retrieve all *active* customers and order them by their ID:
 $customers = Customer::find()
-	->where(array('status' => $active))
+	->where(['status' => $active])
 	->orderBy('id')
 	->all();
 
@@ -91,7 +91,7 @@ $customer = Customer::find(1);
 
 // the above code is equivalent to the following:
 $customer = Customer::find()
-	->where(array('id' => 1))
+	->where(['id' => 1])
 	->one();
 
 // to retrieve customers using a raw SQL statement:
@@ -100,7 +100,7 @@ $customers = Customer::findBySql($sql)->all();
 
 // to return the number of *active* customers:
 $count = Customer::find()
-	->where(array('status' => $active))
+	->where(['status' => $active])
 	->count();
 
 // to return customers in terms of arrays rather than `Customer` objects:
@@ -172,7 +172,7 @@ $customer = Customer::find($id);
 $customer->delete();
 
 // to increment the age of ALL customers by 1
-Customer::updateAllCounters(array('age' => 1));
+Customer::updateAllCounters(['age' => 1]);
 ```
 
 > Info: The `save()` method will either perform an `INSERT` or `UPDATE` SQL statement, depending
@@ -202,7 +202,7 @@ class Customer extends \yii\db\ActiveRecord
 {
 	public function getOrders()
 	{
-		return $this->hasMany('Order', array('customer_id' => 'id'));
+		return $this->hasMany('Order', ['customer_id' => 'id']);
 	}
 }
 
@@ -210,7 +210,7 @@ class Order extends \yii\db\ActiveRecord
 {
 	public function getCustomer()
 	{
-		return $this->hasOne('Customer', array('id' => 'customer_id'));
+		return $this->hasOne('Customer', ['id' => 'customer_id']);
 	}
 }
 ```
@@ -257,8 +257,8 @@ class Customer extends \yii\db\ActiveRecord
 {
 	public function getBigOrders($threshold = 100)
 	{
-		return $this->hasMany('Order', array('customer_id' => 'id'))
+		return $this->hasMany('Order', ['customer_id' => 'id'])
-			->where('subtotal > :threshold', array(':threshold' => $threshold))
+			->where('subtotal > :threshold', [':threshold' => $threshold])
 			->orderBy('id');
 	}
 }
@@ -291,8 +291,8 @@ class Order extends \yii\db\ActiveRecord
 {
 	public function getItems()
 	{
-		return $this->hasMany('Item', array('id' => 'item_id'))
+		return $this->hasMany('Item', ['id' => 'item_id'])
-			->viaTable('tbl_order_item', array('order_id' => 'id'));
+			->viaTable('tbl_order_item', ['order_id' => 'id']);
 	}
 }
 ```
@@ -306,12 +306,12 @@ class Order extends \yii\db\ActiveRecord
 {
 	public function getOrderItems()
 	{
-		return $this->hasMany('OrderItem', array('order_id' => 'id'));
+		return $this->hasMany('OrderItem', ['order_id' => 'id']);
 	}
 
 	public function getItems()
 	{
-		return $this->hasMany('Item', array('id' => 'item_id'))
+		return $this->hasMany('Item', ['id' => 'item_id'])
 			->via('orderItems');
 	}
 }
@@ -379,11 +379,11 @@ $orders = $customer->getOrders()->where('subtotal>100')->all();
 
 // eager loading: SELECT * FROM tbl_customer LIMIT 10
                   SELECT * FROM tbl_order WHERE customer_id IN (1,2,...) AND subtotal>100
-$customers = Customer::find()->limit(100)->with(array(
+$customers = Customer::find()->limit(100)->with([
 	'orders' => function($query) {
 		$query->andWhere('subtotal>100');
 	},
-))->all();
+])->all();
 ```
 
 
@@ -483,7 +483,7 @@ class Customer extends \yii\db\ActiveRecord
 	 */
 	public static function olderThan($query, $age = 30)
 	{
-		$query->andWhere('age > :age', array(':age' => $age));
+		$query->andWhere('age > :age', [':age' => $age]);
 	}
 }
 
@@ -517,7 +517,7 @@ class Feature extends \yii\db\ActiveRecord
 
 	public function getProduct()
 	{
-		return $this->hasOne('Product', array('product_id' => 'id'));
+		return $this->hasOne('Product', ['product_id' => 'id']);
 	}
 }
 
@@ -527,7 +527,7 @@ class Product extends \yii\db\ActiveRecord
 
 	public function getFeatures()
 	{
-		return $this->hasMany('Feature', array('id' => 'product_id'));
+		return $this->hasMany('Feature', ['id' => 'product_id']);
 	}
 }
 ```
@@ -566,17 +566,17 @@ class Feature extends \yii\db\ActiveRecord
 
 	public function getProduct()
 	{
-		return $this->hasOne('Product', array('product_id' => 'id'));
+		return $this->hasOne('Product', ['product_id' => 'id']);
 	}
 
 	public function scenarios()
 	{
-		return array(
+		return [
-			'userCreates' => array(
+			'userCreates' => [
-				'attributes' => array('name', 'value'),
+				'attributes' => ['name', 'value'],
-				'atomic' => array(self::OP_INSERT),
+				'atomic' => [self::OP_INSERT],
-			),
+			],
-		);
+		];
 	}
 }
 
@@ -586,17 +586,17 @@ class Product extends \yii\db\ActiveRecord
 
 	public function getFeatures()
 	{
-		return $this->hasMany('Feature', array('id' => 'product_id'));
+		return $this->hasMany('Feature', ['id' => 'product_id']);
 	}
 
 	public function scenarios()
 	{
-		return array(
+		return [
-			'userCreates' => array(
+			'userCreates' => [
-				'attributes' => array('title', 'price'),
+				'attributes' => ['title', 'price'],
-				'atomic' => array(self::OP_INSERT),
+				'atomic' => [self::OP_INSERT],
-			),
+			],
-		);
+		];
 	}
 
 	public function afterValidate()

docs/guide/bootstrap-widgets.md

@@ -17,11 +17,11 @@ convenient way to include bootstrap assets in your pages with a single line adde
 `config` directory:
 
 ```php
-public $depends = array(
+public $depends = [
 	'yii\web\YiiAsset',
 	'yii\bootstrap\BootstrapAsset', // this line
 	// 'yii\bootstrap\BootstrapThemeAsset' // uncomment to apply bootstrap 2 style to bootstrap 3
-);
+];
 ```
 
 Using bootstrap through Yii asset manager allows you to minimize its resources and combine with your own resources when

docs/guide/caching.md

@@ -13,23 +13,23 @@ two cache servers. Note, this configuration should be done in file located at `@
 in case you're using basic sample application.
 
 ```php
-'components' => array(
+'components' => [
-	'cache' => array(
+	'cache' => [
 		'class' => '\yii\caching\MemCache',
-		'servers' => array(
+		'servers' => [
-			array(
+			[
 				'host' => 'server1',
 				'port' => 11211,
 				'weight' => 100,
-			),
+			],
-			array(
+			[
 				'host' => 'server2',
 				'port' => 11211,
 				'weight' => 50,
-			),
+			],
-		),
+		],
-	),
+	],
-),
+],
 ```
 
 When the application is running, the cache component can be accessed through `Yii::$app->cache` call.

docs/guide/configuration.md

@@ -29,12 +29,12 @@ stored in a PHP file in `/config` directory of the application and looks like th
 
 ```php
 <?php
-return array(
+return [
 	'id' => 'applicationId',
 	'basePath' => dirname(__DIR__),
-	'components' => array(
+	'components' => [
 		// ...
-	),
+	],
 	'params' => require(__DIR__ . '/params.php'),
 );
 ```
@@ -53,31 +53,25 @@ Majority of Yii functionality are application components. These are attached to
 
 ```php
 <?php
-return array(
+return [
 	'id' => 'applicationId',
 	'basePath' => dirname(__DIR__),
-	'components' => array(
+	'components' => [
-		'cache' => array(
+		'cache' => ['class' => 'yii\caching\FileCache'],
-			'class' => 'yii\caching\FileCache',
+		'user' => ['identityClass' => 'app\models\User'],
-		),
+		'errorHandler' => ['errorAction' => 'site/error'],
-		'user' => array(
+		'log' => [
-			'identityClass' => 'app\models\User',
-		),
-		'errorHandler' => array(
-			'errorAction' => 'site/error',
-		),
-		'log' => array(
 			'traceLevel' => YII_DEBUG ? 3 : 0,
-			'targets' => array(
+			'targets' => [
-				array(
+				[
 					'class' => 'yii\log\FileTarget',
-					'levels' => array('error', 'warning'),
+					'levels' => ['error', 'warning'],
-				),
+				],
-			),
+			],
-		),
+		],
-	),
+	],
 	// ...
-);
+];
 ```
 
 In the above four components are configured: `cache`, `user`, `errorHandler`, `log`. Each entry key is a component ID

docs/guide/controller.md

@@ -93,10 +93,10 @@ class BlogController extends Controller
 			$text = $post->getHistory($version);
 		}
 
-		return $this->render('view', array(
+		return $this->render('view', [
 			'post' => $post,
 			'text' => $text,
-		));
+		]);
 	}
 }
 ```
@@ -128,13 +128,11 @@ class BlogController extends Controller
 		if(\Yii::$app->request->isPost)) {
 			$post->load($_POST);
 			if($post->save()) {
-				$this->redirect(array('view', 'id' => $post->id));
+				$this->redirect(['view', 'id' => $post->id]);
 			}
 		}
 
-		return $this->render('update', array(
+		return $this->render('update', ['post' => $post]);
-			'post' => $post,
-		));
 	}
 }
 ```
@@ -167,13 +165,12 @@ public SiteController extends \yii\web\Controller
 {
 	public function actions()
 	{
-		return array(
+		return [
-			'about' => array(
+			'about' => [
 				'class' => '@app/actions/Page',
 				'view' => 'about',
-				),
+			],
-			),
+		];
-		);
 	}
 }
 ```

docs/guide/database-basics.md

@@ -19,11 +19,11 @@ In order to start using database you need to configure database connection compo
 to application configuration (for "basic" web application it's `config/web.php`) like the following:
 
 ```php
-return array(
+return [
 	// ...
-	'components' => array(
+	'components' => [
 		// ...
-		'db' => array(
+		'db' => [
 			'class' => 'yii\db\Connection',
 			'dsn' => 'mysql:host=localhost;dbname=mydatabase', // MySQL, MariaDB
 			//'dsn' => 'sqlite:/path/to/database/file', // SQLite
@@ -36,10 +36,10 @@ return array(
 			'username' => 'root',
 			'password' => '',
 			'charset' => 'utf8',
-		),
+		],
-	),
+	],
 	// ...
-);
+];
 ```
 Please refer to the [PHP manual](http://www.php.net/manual/en/function.PDO-construct.php) for more details
 on the format of the DSN string.
@@ -61,11 +61,11 @@ $secondaryConnection = \Yii::$app->secondDb;
 If you don't want to define the connection as an application component you can instantiate it directly:
 
 ```php
-$connection = new \yii\db\Connection(array(
+$connection = new \yii\db\Connection([
 	'dsn' => $dsn,
  	'username' => $username,
  	'password' => $password,
-));
+]);
 $connection->open();
 ```
 
@@ -118,22 +118,20 @@ Alternatively the following syntax that takes care of proper table and column na
 
 ```php
 // INSERT
-$connection->createCommand()->insert('tbl_user', array(
+$connection->createCommand()->insert('tbl_user', [
 	'name' => 'Sam',
 	'age' => 30,
-))->execute();
+])->execute();
 
 // INSERT multiple rows at once
-$connection->createCommand()->batchInsert('tbl_user', array('name', 'age'), array(
+$connection->createCommand()->batchInsert('tbl_user', ['name', 'age'], [
-	array('Tom', 30),
+	['Tom', 30],
-	array('Jane', 20),
+	['Jane', 20],
-	array('Linda', 25),
+	['Linda', 25],
-))->execute();
+])->execute();
 
 // UPDATE
-$connection->createCommand()->update('tbl_user', array(
+$connection->createCommand()->update('tbl_user', ['status' => 1], 'age > 30')->execute();
-	'status' => 1,
-), 'age > 30')->execute();
 
 // DELETE
 $connection->createCommand()->delete('tbl_user', 'status = 0')->execute();
@@ -236,11 +234,11 @@ These can be used as follows:
 
 ```php
 // CREATE TABLE
-$connection->createCommand()->createTable('tbl_post', array(
+$connection->createCommand()->createTable('tbl_post', [
 	'id' => 'pk',
 	'title' => 'string',
 	'text' => 'text',
-);
+];
 ```
 
 For the full reference check [[\yii\db\Command]].

docs/guide/i18n.md

@@ -24,7 +24,7 @@ Target language is what's currently used. It's defined in application configurat
 
 ```php
 // ...
-return array(
+return [
 	'id' => 'applicationID',
 	'basePath' => dirname(__DIR__),
 	'language' => 'ru_RU' // ← here!
@@ -50,22 +50,22 @@ echo \Yii::t('app', 'This is a string to translate!');
 Yii tries to load approprite translation from one of the message sources defined via `i18n` component configuration:
 
 ```php
-'components' => array(
+'components' => [
 	// ...
-	'i18n' => array(
+	'i18n' => [
-		'translations' => array(
+		'translations' => [
-			'app*' => array(
+			'app*' => [
 				'class' => 'yii\i18n\PhpMessageSource',
 				//'basePath' => '@app/messages',
 				//'sourceLanguage' => 'en_US',
-				'fileMap' => array(
+				'fileMap' => [
 					'app' => 'app.php',
 					'app/error' => 'error.php',
-				),
+				],
-			),
+			],
-		),
+		],
-	),
+	],
-),
+],
 ```
 
 In the above `app*` is a pattern that specifies which categories are handled by the message source. In this case we're
@@ -95,9 +95,9 @@ The format for this is to use curly brackets around the parameter name as you ca
 
 ```php
 $username = 'Alexander';
-echo \Yii::t('app', 'Hello, {username}!', array(
+echo \Yii::t('app', 'Hello, {username}!', [
 	'username' => $username,
-));
+]);
 ```
 
 Note that the parameter assignment is without the brackets.
@@ -190,17 +190,13 @@ echo \Yii::t('app', 'It is {0, date, HH:mm}', time());
 ### Spellout
 
 ```php
-echo \Yii::t('app', '{n,number} is spelled as {n, spellout}', array(
+echo \Yii::t('app', '{n,number} is spelled as {n, spellout}', ['n' => 42]);
-	'n' => 42,
-));
 ```
 
 ### Ordinal
 
 ```php
-echo \Yii::t('app', 'You are {n, ordinal} visitor here!', array(
+echo \Yii::t('app', 'You are {n, ordinal} visitor here!', ['n' => 42]);
-	'n' => 42,
-));
 ```
 
 Will produce "You are 42nd visitor here!".
@@ -209,9 +205,7 @@ Will produce "You are 42nd visitor here!".
 
 
 ```php
-echo \Yii::t('app', 'You are here for {n, duration} already!', array(
+echo \Yii::t('app', 'You are here for {n, duration} already!', ['n' => 42]);
-	'n' => 42,
-));
 ```
 
 Will produce "You are here for 47 sec. already!".
@@ -223,9 +217,7 @@ functionality is provided without the need to specify inflection rule. Instead i
 word in certain situations.
 
 ```php
-echo \Yii::t('app', 'There {n, plural, =0{are no cats} =1{is one cat} other{are # cats}}!', array(
+echo \Yii::t('app', 'There {n, plural, =0{are no cats} =1{is one cat} other{are # cats}}!', ['n' => 0]);
-	'n' => 0,
-));
 ```
 
 Will give us "There are no cats!".
@@ -249,10 +241,10 @@ You can select phrases based on keywords. The pattern in this case specifies how
 provides a default phrase.
 
 ```php
-echo \Yii::t('app', '{name} is {gender} and {gender, select, female{she} male{he} other{it}} loves Yii!', array(
+echo \Yii::t('app', '{name} is {gender} and {gender, select, female{she} male{he} other{it}} loves Yii!', [
 	'name' => 'Snoopy',
 	'gender' => 'dog',
-));
+]);
 ```
 
 Will produce "Snoopy is dog and it loves Yii!".

docs/guide/migration.md

@@ -82,11 +82,11 @@ class m101129_185401_create_news_table extends \yii\db\Migration
 {
 	public function up()
 	{
-		$this->db->createCommand()->createTable('tbl_news', array(
+		$this->db->createCommand()->createTable('tbl_news', [
 			'id' => 'pk',
 			'title' => 'string(128) NOT NULL',
 			'content' => 'text',
-		))->execute();
+		])->execute();
 	}
 
 	public function down()
@@ -128,11 +128,11 @@ class m101129_185401_create_news_table extends \yii\db\Migration
 		$transaction=$this->getDbConnection()->beginTransaction();
 		try
 		{
-			$this->db->createCommand()->createTable('tbl_news', array(
+			$this->db->createCommand()->createTable('tbl_news', [
 				'id' => 'pk',
 				'title' => 'string NOT NULL',
 				'content' => 'text',
-			))->execute();
+			])->execute();
 			$transaction->commit();
 		}
 		catch(Exception $e)

docs/guide/model.md

@@ -77,10 +77,10 @@ class LoginForm extends \yii\base\Model
 
 	public function attributeLabels()
 	{
-		return array(
+		return [
 			'username' => 'Your name',
 			'password' => 'Your password',
-		);
+		];
 	}
 }
 ```
@@ -105,10 +105,10 @@ class User extends \yii\db\ActiveRecord
 {
 	public function scenarios()
 	{
-		return array(
+		return [
-			'login' => array('username', 'password'),
+			'login' => ['username', 'password'],
-			'register' => array('username', 'email', 'password'),
+			'register' => ['username', 'email', 'password'],
-		);
+		];
 	}
 }
 ```
@@ -117,7 +117,7 @@ Sometimes, we want to mark an attribute as not safe for massive assignment (but
 We may do so by prefixing an exclamation character to the attribute name when declaring it in `scenarios()`. For example,
 
 ```php
-array('username', 'password', '!secret')
+['username', 'password', '!secret']
 ```
 
 Active model scenario could be set using one of the following ways:
@@ -128,14 +128,14 @@ class EmployeeController extends \yii\web\Controller
 	public function actionCreate($id = null)
 	{
 		// first way
-		$employee = new Employee(array('scenario' => 'managementPanel'));
+		$employee = new Employee(['scenario' => 'managementPanel']);
 
 		// second way
 		$employee = new Employee;
 		$employee->scenario = 'managementPanel';
 
 		// third way
-		$employee = Employee::find()->where('id = :id', array(':id' => $id))->one();
+		$employee = Employee::find()->where('id = :id', [':id' => $id])->one();
 		if ($employee !== null) {
 			$employee->setScenario('managementPanel');
 		}
@@ -171,7 +171,7 @@ or several attributes and is effective in one or several scenarios. A rule can b
 instance of a [[\yii\validators\Validator]] child class, or an array with the following format:
 
 ```php
-array(
+[
 	'attribute1, attribute2, ...',
 	'validator class or alias',
 	// specifies in which scenario(s) this rule is active.
@@ -182,7 +182,7 @@ array(
 	'property1' => 'value1',
 	'property2' => 'value2',
 	// ...
-)
+]
 ```
 
 When `validate()` is called, the actual validation rules executed are determined using both of the following criteria:
@@ -216,10 +216,10 @@ var_dump($attributes);
 Using the same `attributes` property you can massively assign data from associative array to model attributes:
 
 ```php
-$attributes = array(
+$attributes = [
 	'title' => 'Model attributes',
 	'create_time' => time(),
-);
+];
 $post->attributes = $attributes;
 ```
 
@@ -238,24 +238,24 @@ assignment is described in `scenarios` method:
 ```php
 function rules()
 {
-	return array(
+	return [
 		// rule applied when corresponding field is "safe"
-		array('username', 'string', 'length' => array(4, 32)),
+		['username', 'string', 'length' => [4, 32]],
-		array('first_name', 'string', 'max' => 128),
+		['first_name', 'string', 'max' => 128],
-		array('password', 'required'),
+		['password', 'required'],
 
 		// rule applied when scenario is "signup" no matter if field is "safe" or not
-		array('hashcode', 'check', 'on' => 'signup'),
+		['hashcode', 'check', 'on' => 'signup'],
-	);
+	];
 }
 
 function scenarios()
 {
-	return array(
+	return [
 		// on signup allow mass assignment of username
-		'signup' => array('username', 'password'),
+		'signup' => ['username', 'password'],
-		'update' => array('username', 'first_name'),
+		'update' => ['username', 'first_name'],
-	);
+	];
 }
 ```
 

docs/guide/performance.md

@@ -41,11 +41,11 @@ to save the time of parsing database schema. This can be done by setting the
 `protected/config/main.php`:
 
 ```php
-return array(
+return [
 	// ...
-	'components' => array(
+	'components' => [
 		// ...
-		'db' => array(
+		'db' => [
 			'class' => 'yii\db\Connection',
 			'dsn' => 'mysql:host=localhost;dbname=mydatabase',
 			'username' => 'root',
@@ -57,12 +57,12 @@ return array(
 
 			// Name of the cache component used. Default is 'cache'.
 			//'schemaCache' => 'cache',
-		),
+		],
-		'cache' => array(
+		'cache' => [
 			'class' => 'yii\caching\FileCache',
-		),
+		],
-	),
+	],
-);
+];
 ```
 
 Note that `cache` application component should be configured.
@@ -79,10 +79,10 @@ switch to another storage such as database. You can do so by configuring your
 application via `protected/config/main.php`:
 
 ```php
-return array(
+return [
 	// ...
-	'components' => array(
+	'components' => [
-		'session' => array(
+		'session' => [
 			'class' => 'yii\web\DbSession',
 
 			// Set the following if want to use DB component other than
@@ -91,9 +91,9 @@ return array(
 
 			// To override default session table set the following
 			// 'sessionTable' => 'my_session',
-		),
+		],
-	),
+	],
-);
+];
 ```
 
 You can use `CacheSession` to store sessions using cache. Note that some
@@ -154,9 +154,7 @@ class PostController extends Controller
 	public function actionIndex()
 	{
 		$posts = Post::find()->orderBy('id DESC')->limit(100)->asArray()->all();
-		return $this->render('index', array(
+		return $this->render('index', ['posts' => $posts]);
-			'posts' => $posts,
-		));
 	}
 }
 ```

docs/guide/query-builder.md

@@ -40,7 +40,7 @@ $query->select('user_id')->distinct()->from('tbl_post');
 Select options can be specified as array. It's especially useful when these are formed dynamically.
 
 ```php
-$query->select(array('tbl_user.name AS author', 'tbl_post.title as title')) // <-- specified as array
+$query->select(['tbl_user.name AS author', 'tbl_post.title as title']) // <-- specified as array
 	->from('tbl_user')
 	->leftJoin('tbl_post', 'tbl_post.user_id = tbl_user.id'); // <-- join with another table
 ```
@@ -67,9 +67,7 @@ is `where`. There are multiple ways to use it.
 The simplest is to specify condition in a string:
 
 ```php
-$query->where('status=:status', array(
+$query->where('status=:status', [':status' => $status]);
-	':status' => $status,
-));
 ```
 
 When using this format make sure you're binding parameters and not creating a query by string concatenation.
@@ -79,19 +77,17 @@ Instead of binding status value immediately you can do it using `params` or `add
 ```php
 $query->where('status=:status');
 
-$query->addParams(array(
+$query->addParams([':status' => $status]);
-	':status' => $status,
-));
 ```
 
 There is another convenient way to use the method called hash format:
 
 ```php
-$query->where(array(
+$query->where([
 	'status' => 10,
 	'type' => 2,
-	'id' => array(4, 8, 15, 16, 23, 42),
+	'id' => [4, 8, 15, 16, 23, 42],
-));
+]);
 ```
 
 It will generate the following SQL:
@@ -103,9 +99,7 @@ WHERE (`status` = 10) AND (`type` = 2) AND (`id` IN (4, 8, 15, 16, 23, 42))
 If you'll specify value as `null` such as the following:
 
 ```php
-$query->where(array(
+$query->where(['status' => null]);
-	'status' => null,
-));
 ```
 
 SQL generated will be:
@@ -114,31 +108,31 @@ SQL generated will be:
 WHERE (`status` IS NULL)
 ```
 
-Another way to use the method is the operand format which is `array(operator, operand1, operand2, ...)`.
+Another way to use the method is the operand format which is `[operator, operand1, operand2, ...]`.
 
 Operator can be one of the following:
 
 - `and`: the operands should be concatenated together using `AND`. For example,
-  `array('and', 'id=1', 'id=2')` will generate `id=1 AND id=2`. If an operand is an array,
+  `['and', 'id=1', 'id=2']` will generate `id=1 AND id=2`. If an operand is an array,
   it will be converted into a string using the rules described here. For example,
-  `array('and', 'type=1', array('or', 'id=1', 'id=2'))` will generate `type=1 AND (id=1 OR id=2)`.
+  `['and', 'type=1', ['or', 'id=1', 'id=2']]` will generate `type=1 AND (id=1 OR id=2)`.
   The method will NOT do any quoting or escaping.
 - `or`: similar to the `and` operator except that the operands are concatenated using `OR`.
 - `between`: operand 1 should be the column name, and operand 2 and 3 should be the
    starting and ending values of the range that the column is in.
-   For example, `array('between', 'id', 1, 10)` will generate `id BETWEEN 1 AND 10`.
+   For example, `['between', 'id', 1, 10]` will generate `id BETWEEN 1 AND 10`.
 - `not between`: similar to `between` except the `BETWEEN` is replaced with `NOT BETWEEN`
   in the generated condition.
 - `in`: operand 1 should be a column or DB expression, and operand 2 be an array representing
   the range of the values that the column or DB expression should be in. For example,
-  `array('in', 'id', array(1, 2, 3))` will generate `id IN (1, 2, 3)`.
+  `['in', 'id', [1, 2, 3]]` will generate `id IN (1, 2, 3)`.
   The method will properly quote the column name and escape values in the range.
 - `not in`: similar to the `in` operator except that `IN` is replaced with `NOT IN` in the generated condition.
 - `like`: operand 1 should be a column or DB expression, and operand 2 be a string or an array representing
   the values that the column or DB expression should be like.
-  For example, `array('like', 'name', '%tester%')` will generate `name LIKE '%tester%'`.
+  For example, `['like', 'name', '%tester%']` will generate `name LIKE '%tester%'`.
   When the value range is given as an array, multiple `LIKE` predicates will be generated and concatenated
-  using `AND`. For example, `array('like', 'name', array('%test%', '%sample%'))` will generate
+  using `AND`. For example, `['like', 'name', ['%test%', '%sample%']]` will generate
   `name LIKE '%test%' AND name LIKE '%sample%'`.
   The method will properly quote the column name and escape values in the range.
 - `or like`: similar to the `like` operator except that `OR` is used to concatenate the `LIKE`
@@ -154,7 +148,7 @@ If you are building parts of condition dynamically it's very convenient to use `
 $status = 10;
 $search = 'yii';
 
-$query->where(array('status' => $status));
+$query->where(['status' => $status]);
 if (!empty($search)) {
 	$query->addWhere('like', 'title', $search);
 }
@@ -172,10 +166,10 @@ Order
 For ordering results `orderBy` and `addOrderBy` could be used:
 
 ```php
-$query->orderBy(array(
+$query->orderBy([
 	'id' => Query::SORT_ASC,
 	'name' => Query::SORT_DESC,
-));
+]);
 ```
 
 Here we are ordering by `id` ascending and then by `name` descending.
@@ -192,14 +186,14 @@ $query->groupBy('id, status');
 If you want to add another field after using `groupBy`:
 
 ```php
-$query->addGroupBy(array('created_at', 'updated_at'));
+$query->addGroupBy(['created_at', 'updated_at']);
 ```
 
 To add a `HAVING` condition the corresponding `having` method and its `andHaving` and `orHaving` can be used. Parameters
 for these are similar to the ones for `where` methods group:
 
 ```php
-$query->having(array('status' => $status));
+$query->having(['status' => $status]);
 ```
 
 Limit and offset

docs/guide/template.md

@@ -7,23 +7,23 @@ The `view` component is responsible for rendering views. You can add
 a custom template engines by reconfiguring this component's behavior:
 
 ```php
-array(
+[
-	'components' => array(
+	'components' => [
-		'view' => array(
+		'view' => [
 			'class' => 'yii\base\View',
-			'renderers' => array(
+			'renderers' => [
-				'tpl' => array(
+				'tpl' => [
 					'class' => 'yii\renderers\SmartyViewRenderer',
-				),
+				],
-				'twig' => array(
+				'twig' => [
 					'class' => 'yii\renderers\TwigViewRenderer',
 					'twigPath' => '@app/vendors/Twig',
-				),
+				],
 				// ...
-			),
+			],
-		),
+		],
-	),
+	],
-)
+]
 ```
 
 Note that the Smarty and Twig packages themselves are not bundled with Yii. You must download them yourself. Then unpack the packages and place the resulting files in a logical location, such as the application's `protected/vendor` folder. Finally, specify the correct `smartyPath` or `twigPath`, as in the code above (for Twig).
@@ -36,7 +36,7 @@ Unlike standard view files, when using Twig, you must include the extension  whe
 or `$this->renderPartial()` from your controller:
 
 ```php
-echo $this->render('renderer.twig', array('username' => 'Alex'));
+echo $this->render('renderer.twig', ['username' => 'Alex']);
 ```
 
 ### Additional functions
@@ -63,7 +63,7 @@ To use Smarty, you need to create templates in files with the `.tpl` extension (
 or `$this->renderPartial()` from your controller:
 
 ```php
-echo $this->render('renderer.tpl', array('username' => 'Alex'));
+echo $this->render('renderer.tpl', ['username' => 'Alex']);
 ```
 
 ### Additional functions

docs/guide/upgrade-from-v1.md

@@ -40,7 +40,7 @@ it can be properly configured:
 ```php
 class MyClass extends \yii\Object
 {
-    public function __construct($param1, $param2, $config = array())
+    public function __construct($param1, $param2, $config = [])
     {
         // ... initialization before configuration is applied
 
@@ -65,11 +65,11 @@ By following this convention, you will be able to create and configure a new obj
 using a configuration array like the following:
 
 ```php
-$object = Yii::createObject(array(
+$object = Yii::createObject([
     'class' => 'MyClass',
     'property1' => 'abc',
     'property2' => 'cde',
-), $param1, $param2);
+], $param1, $param2);
 ```
 
 
@@ -177,10 +177,10 @@ if (isset($_POST['Post'])) {
 
 $model->save();
 
-$postTags = array();
+$postTags = [];
 $tagsCount = count($_POST['PostTag']);
 while($tagsCount-- > 0){
-    $postTags[] = new PostTag(array('post_id' => $model->id));
+    $postTags[] = new PostTag(['post_id' => $model->id]);
 }
 Model::loadMultiple($postTags, $_POST);
 ```
@@ -193,10 +193,10 @@ a list of scenarios and the corresponding attributes that need to be validated w
 ```php
 public function scenarios()
 {
-    return array(
+    return [
-        'backend' => array('email', 'role'),
+        'backend' => ['email', 'role'],
-        'frontend' => array('email', '!name'),
+        'frontend' => ['email', '!name'],
-    );
+    ];
 }
 ```
 
@@ -229,13 +229,13 @@ methods of the `Widget` class. For example,
 
 ```php
 // Note that you have to "echo" the result to display it
-echo \yii\widgets\Menu::widget(array('items' => $items));
+echo \yii\widgets\Menu::widget(['items' => $items]);
 
 // Passing an array to initialize the object properties
-$form = \yii\widgets\ActiveForm::begin(array(
+$form = \yii\widgets\ActiveForm::begin([
-	'options' => array('class' => 'form-horizontal'),
+	'options' => ['class' => 'form-horizontal'],
-	'fieldConfig' => array('inputOptions' => array('class' => 'input-xlarge')),
+	'fieldConfig' => ['inputOptions' => ['class' => 'input-xlarge']],
-));
+]);
 ... form inputs here ...
 \yii\widgets\ActiveForm::end();
 ```
@@ -249,7 +249,7 @@ Themes
 
 Themes work completely different in 2.0. They are now based on a path map to "translate" a source
 view into a themed view. For example, if the path map for a theme is
-`array('/web/views' => '/web/themes/basic')`, then the themed version for a view file
+`['/web/views' => '/web/themes/basic']`, then the themed version for a view file
 `/web/views/site/index.php` will be `/web/themes/basic/site/index.php`.
 
 For this reason, theme can now be applied to any view file, even if a view rendered outside
@@ -295,11 +295,11 @@ code in a controller:
 ```php
 public function behaviors()
 {
-    return array(
+    return [
-        'access' => array(
+        'access' => [
             'class' => 'yii\web\AccessControl',
-            'rules' => array(
+            'rules' => [
-                array('allow' => true, 'actions' => array('admin'), 'roles' => array('@')),
+                ['allow' => true, 'actions' => ['admin'], 'roles' => ['@']],
             ),
         ),
     );
@@ -386,7 +386,7 @@ class Customer extends \yii\db\ActiveRecord
 {
 	public function getOrders()
 	{
-		return $this->hasMany('Order', array('customer_id' => 'id'));
+		return $this->hasMany('Order', ['customer_id' => 'id']);
 	}
 }
 ```
@@ -409,7 +409,7 @@ use the `find()` method:
 ```php
 // to retrieve all *active* customers and order them by their ID:
 $customers = Customer::find()
-	->where(array('status' => $active))
+	->where(['status' => $active])
 	->orderBy('id')
 	->all();
 // return the customer whose PK is 1
@@ -467,11 +467,11 @@ both `post/popular` and `post/1/popular`. In 1.1, you would have to use two rule
 the same goal.
 
 ```php
-array(
+[
 	'pattern' => 'post/<page:\d+>/<tag>',
 	'route' => 'post/index',
-	'defaults' => array('page' => 1),
+	'defaults' => ['page' => 1],
-)
+]
 ```
 
 

docs/guide/validation.md

@@ -90,16 +90,16 @@ Converts the attribute value according to a filter.
 Typically a callback is either the name of PHP function:
 
 ```php
-array('password', 'filter', 'filter' => 'trim'),
+['password', 'filter', 'filter' => 'trim'],
 ```
 
 Or an anonymous function:
 
 ```php
-array('text', 'filter', 'filter' => function ($value) {
+['text', 'filter', 'filter' => function ($value) {
 	// here we are removing all swear words from text
 	return $newValue;
-}),
+}],
 ```
 
 ### `in`: [[RangeValidator]]
@@ -139,7 +139,7 @@ Serves as a dummy validator whose main purpose is to mark the attributes to be s
 
 Validates that the attribute value is of certain length.
 
-- `length` specifies the length limit of the value to be validated. Can be `exactly X`, `array(min X)`, `array(min X, max Y)`.
+- `length` specifies the length limit of the value to be validated. Can be `exactly X`, `[min X]`, `[min X, max Y]`.
 - `max`  maximum length. If not set, it means no maximum length limit.
 - `min` minimum length. If not set, it means no minimum length limit.
 - `encoding` the encoding of the string value to be validated. _([[\yii\base\Application::charset]])_
@@ -157,7 +157,7 @@ Validates that the attribute value is unique in the corresponding database table
 
 Validates that the attribute value is a valid http or https URL.
 
-- `validSchemes` list of URI schemes which should be considered valid. _array('http', 'https')_
+- `validSchemes` list of URI schemes which should be considered valid. _['http', 'https']_
 - `defaultScheme` the default URI scheme. If the input doesn't contain the scheme part, the default scheme will be
   prepended to it. _(null)_
 - `enableIDN` whether validation process should take into account IDN (internationalized domain names). _(false)_

docs/guide/view.md

@@ -16,9 +16,7 @@ View is typically called from controller action like the following:
 ```php
 public function actionIndex()
 {
-	return $this->render('index', array(
+	return $this->render('index', ['username' => 'samdark']);
-		'username' => 'samdark',
-	));
 }
 ```
 
@@ -47,13 +45,13 @@ In order to use widget you need to do the following:
 
 ```php
 // Note that you have to "echo" the result to display it
-echo \yii\widgets\Menu::widget(array('items' => $items));
+echo \yii\widgets\Menu::widget(['items' => $items]);
 
 // Passing an array to initialize the object properties
-$form = \yii\widgets\ActiveForm::begin(array(
+$form = \yii\widgets\ActiveForm::begin([
-	'options' => array('class' => 'form-horizontal'),
+	'options' => ['class' => 'form-horizontal'],
-	'fieldConfig' => array('inputOptions' => array('class' => 'input-xlarge')),
+	'fieldConfig' => ['inputOptions' => ['class' => 'input-xlarge']],
-));
+]);
 ... form inputs here ...
 \yii\widgets\ActiveForm::end();
 ```
@@ -132,7 +130,7 @@ $this->title = 'My page title';
 Adding meta tags such as encoding, description, keywords is easy with view object as well:
 
 ```php
-$this->registerMetaTag(array('encoding' => 'utf-8'));
+$this->registerMetaTag(['encoding' => 'utf-8']);
 ```
 
 The first argument is an map of `<meta>` tag option names and values. The code above will produce:
@@ -144,8 +142,8 @@ The first argument is an map of `<meta>` tag option names and values. The code a
 Sometimes there's a need to have only a single tag of a type. In this case you need to specify the second argument:
 
 ```html
-$this->registerMetaTag(array('description' => 'This is my cool website made with Yii!'), 'meta-description');
+$this->registerMetaTag(['description' => 'This is my cool website made with Yii!'], 'meta-description');
-$this->registerMetaTag(array('description' => 'This website is about funny raccoons.'), 'meta-description');
+$this->registerMetaTag(['description' => 'This website is about funny raccoons.'], 'meta-description');
 ```
 
 If there are multiple calls with the same value of the second argument (`meta-description` in this case), the latter will
@@ -161,12 +159,12 @@ override the former and only a single tag will be rendered:
 server. Yii view object has a method to work with these:
 
 ```php
-$this->registerLinkTag(array(
+$this->registerLinkTag([
 	'title' => 'Lives News for Yii Framework',
 	'rel' => 'alternate',
 	'type' => 'application/rss+xml',
 	'href' => 'http://www.yiiframework.com/rss.xml/',
-));
+]);
 ```
 
 The code above will result in
@@ -200,7 +198,7 @@ If you want to specify additional properties of the style tag, pass array of nam
 need to make sure there's only a single style tag use third argument as was mentioned in meta tags description.
 
 ```php
-$this->registerCssFile("http://example.com/css/themes/black-and-white.css", array('media' => 'print'), 'css-print-theme');
+$this->registerCssFile("http://example.com/css/themes/black-and-white.css", ['media' => 'print'], 'css-print-theme');
 ```
 
 The code above will add a link to CSS file to the head section of the page. The CSS will be used only when printing the
@@ -308,10 +306,10 @@ Then we're using it in `index.php` view where we display a list of users:
 <div class="user-index">
 	<?php
 	foreach($users as $user) {
-		echo $this->render('_profile', array(
+		echo $this->render('_profile', [
 			'username' => $user->name,
 			'tagline' => $user->tagline,
-		));
+		]);
 	}
 	?>
 </div>
@@ -320,10 +318,10 @@ Then we're using it in `index.php` view where we display a list of users:
 Same way we can reuse it in another view displaying a single user profile:
 
 ```php
-echo $this->render('_profile', array(
+echo $this->render('_profile', [
 	'username' => $user->name,
 	'tagline' => $user->tagline,
-));
+]);
 ```
 
 ### Accessing context
@@ -347,13 +345,13 @@ Since view is also an application component named `view` you can replace it with
 from `yii\base\View`. It can be done via application configuration file such as `config/web.php`:
 
 ```php
-return array(
+return [
 	// ...
-	'components' => array(
+	'components' => [
-		'view' => array(
+		'view' => [
 			'class' => 'app\components\View',
-		),
+		],
 		// ...
-	),
+	],
-);
+];
 ```

docs/internals/ar.md

@@ -9,16 +9,16 @@ Possible scenario formats supported by ActiveRecord:
 ```php
 public function scenarios()
 {
-    return array(
+    return [
         // attributes array, all operations won't be wrapped with transaction
-        'scenario1' => array('attribute1', 'attribute2'),
+        'scenario1' => ['attribute1', 'attribute2'],
 
         // insert and update operations will be wrapped with transaction, delete won't be wrapped
-        'scenario2' => array(
+        'scenario2' => [
-            'attributes' => array('attribute1', 'attribute2'),
+            'attributes' => ['attribute1', 'attribute2'],
-            'atomic' => array(self::OP_INSERT, self::OP_UPDATE),
+            'atomic' => [self::OP_INSERT, self::OP_UPDATE],
-        ),
+        ],
-    );
+    ];
 }
 ```
 

extensions/composer/yii/composer/InstallHandler.php

@@ -36,10 +36,10 @@ class InstallHandler
 	 */
 	public static function setPermissions($event)
 	{
-		$options = array_merge(array(
+		$options = array_merge([
-			self::PARAM_WRITABLE => array(),
+			self::PARAM_WRITABLE => [],
-			self::PARAM_EXECUTABLE => array(),
+			self::PARAM_EXECUTABLE => [],
-		), $event->getComposer()->getPackage()->getExtra());
+		], $event->getComposer()->getPackage()->getExtra());
 
 		foreach ((array)$options[self::PARAM_WRITABLE] as $path) {
 			echo "Setting writable: $path ...";
@@ -70,9 +70,9 @@ class InstallHandler
 	 */
 	public static function run($event)
 	{
-		$options = array_merge(array(
+		$options = array_merge([
-			self::PARAM_COMMANDS => array(),
+			self::PARAM_COMMANDS => [],
-		), $event->getComposer()->getPackage()->getExtra());
+		], $event->getComposer()->getPackage()->getExtra());
 
 		if (!isset($options[self::PARAM_CONFIG])) {
 			throw new Exception('Please specify the "' . self::PARAM_CONFIG . '" parameter in composer.json.');

extensions/composer/yii/composer/Installer.php

@@ -63,7 +63,7 @@ class Installer extends LibraryInstaller
 
 	protected function addPackage(PackageInterface $package)
 	{
-		$extension = array('name' => $package->getPrettyName());
+		$extension = ['name' => $package->getPrettyName()];
 
 		$root = $package->getPrettyName();
 		if ($targetDir = $package->getTargetDir()) {
@@ -112,7 +112,7 @@ class Installer extends LibraryInstaller
 	{
 		$file = $this->vendorDir . '/yii-extensions.php';
 		if (!is_file($file)) {
-			return array();
+			return [];
 		}
 		$extensions = require($file);
 		/** @var string $vendorDir defined in yii-extensions.php */
@@ -147,10 +147,10 @@ class Installer extends LibraryInstaller
 	 */
 	public static function setPermissions($event)
 	{
-		$options = array_merge(array(
+		$options = array_merge([
-			self::EXTRA_WRITABLES => array(),
+			self::EXTRA_WRITABLES => [],
-			self::EXTRA_EXECUTABLES => array(),
+			self::EXTRA_EXECUTABLES => [],
-		), $event->getComposer()->getPackage()->getExtra());
+		], $event->getComposer()->getPackage()->getExtra());
 
 		foreach ((array)$options[self::EXTRA_WRITABLES] as $path) {
 			echo "Setting writable: $path ...";
@@ -181,9 +181,9 @@ class Installer extends LibraryInstaller
 	 */
 	public static function run($event)
 	{
-		$options = array_merge(array(
+		$options = array_merge([
-			self::EXTRA_COMMANDS => array(),
+			self::EXTRA_COMMANDS => [],
-		), $event->getComposer()->getPackage()->getExtra());
+		], $event->getComposer()->getPackage()->getExtra());
 
 		if (!isset($options[self::EXTRA_CONFIG])) {
 			throw new Exception('Please specify the "' . self::EXTRA_CONFIG . '" parameter in composer.json.');

extensions/jui/README.md

@@ -44,11 +44,11 @@ You can use these widgets in your view files after you have registered the corre
 Example:
 
 ```php
-echo ProgressBar::widget(array(
+echo ProgressBar::widget([
-	'clientOptions' => array(
+	'clientOptions' => [
 		'value' => 75,
-	),
+	],
-));
+]);
 ```
 
 For further instructions refer to the yii guide.

extensions/jui/yii/jui/Accordion.php

@@ -17,36 +17,24 @@ use yii\helpers\Html;
  * For example:
  *
  * ```php
- * echo Accordion::widget(array(
+ * echo Accordion::widget([
- *     'items' => array(
+ *     'items' => [
- *         array(
+ *         [
  *             'header' => 'Section 1',
  *             'content' => 'Mauris mauris ante, blandit et, ultrices a, suscipit eget...',
- *         ),
+ *         ],
- *         array(
+ *         [
  *             'header' => 'Section 2',
- *             'headerOptions' => array(
+ *             'headerOptions' => ['tag' => 'h3'],
- *                 'tag' => 'h3',
- *             ),
  *             'content' => 'Sed non urna. Phasellus eu ligula. Vestibulum sit amet purus...',
- *             'options' => array(
+ *             'options' => ['tag' => 'div'],
- *                 'tag' => 'div',
+ *         ],
- *             ),
+ *     ],
- *         ),
+ *     'options' => ['tag' => 'div'],
- *     ),
+ *     'itemOptions' => ['tag' => 'div'],
- *     'options' => array(
+ *     'headerOptions' => ['tag' => 'h3'],
- *         'tag' => 'div',
+ *     'clientOptions' => ['collapsible' => false],
- *     ),
+ * ]);
- *     'itemOptions' => array(
- *         'tag' => 'div',
- *     ),
- *     'headerOptions' => array(
- *         'tag' => 'h3',
- *     ),
- *     'clientOptions' => array(
- *         'collapsible' => false,
- *     ),
- * ));
  * ```
  *
  * @see http://api.jqueryui.com/accordion/
@@ -60,36 +48,36 @@ class Accordion extends Widget
 	 *
 	 * - tag: string, defaults to "div", the tag name of the container tag of this widget
 	 */
-	public $options = array();
+	public $options = [];
 	/**
 	 * @var array list of collapsible items. Each item can be an array of the following structure:
 	 *
 	 * ~~~
-	 * array(
+	 * [
 	 *     'header' => 'Item header',
 	 *     'content' => 'Item content',
 	 *     // the HTML attributes of the item header container tag. This will overwrite "headerOptions".
-	 *     'headerOptions' => array(),
+	 *     'headerOptions' => [],
 	 *     // the HTML attributes of the item container tag. This will overwrite "itemOptions".
-	 *     'options' => array(),
+	 *     'options' => [],
-	 * )
+	 * ]
 	 * ~~~
 	 */
-	public $items = array();
+	public $items = [];
 	/**
 	 * @var array list of HTML attributes for the item container tags. This will be overwritten
 	 * by the "options" set in individual [[items]]. The following special options are recognized:
 	 *
 	 * - tag: string, defaults to "div", the tag name of the item container tags.
 	 */
-	public $itemOptions = array();
+	public $itemOptions = [];
 	/**
 	 * @var array list of HTML attributes for the item header container tags. This will be overwritten
 	 * by the "headerOptions" set in individual [[items]]. The following special options are recognized:
 	 *
 	 * - tag: string, defaults to "h3", the tag name of the item container tags.
 	 */
-	public $headerOptions = array();
+	public $headerOptions = [];
 
 
 	/**
@@ -112,7 +100,7 @@ class Accordion extends Widget
 	 */
 	protected function renderItems()
 	{
-		$items = array();
+		$items = [];
 		foreach ($this->items as $item) {
 			if (!isset($item['header'])) {
 				throw new InvalidConfigException("The 'header' option is required.");
@@ -120,10 +108,10 @@ class Accordion extends Widget
 			if (!isset($item['content'])) {
 				throw new InvalidConfigException("The 'content' option is required.");
 			}
-			$headerOptions = array_merge($this->headerOptions, ArrayHelper::getValue($item, 'headerOptions', array()));
+			$headerOptions = array_merge($this->headerOptions, ArrayHelper::getValue($item, 'headerOptions', []));
 			$headerTag = ArrayHelper::remove($headerOptions, 'tag', 'h3');
 			$items[] = Html::tag($headerTag, $item['header'], $headerOptions);
-			$options = array_merge($this->itemOptions, ArrayHelper::getValue($item, 'options', array()));
+			$options = array_merge($this->itemOptions, ArrayHelper::getValue($item, 'options', []));
 			$tag = ArrayHelper::remove($options, 'tag', 'div');
 			$items[] = Html::tag($tag, $item['content'], $options);
 		}

extensions/jui/yii/jui/AccordionAsset.php

@@ -15,11 +15,11 @@ use yii\web\AssetBundle;
 class AccordionAsset extends AssetBundle
 {
 	public $sourcePath = '@yii/jui/assets';
-	public $js = array(
+	public $js = [
 		'jquery.ui.accordion.js',
-	);
+	];
-	public $depends = array(
+	public $depends = [
 		'yii\jui\CoreAsset',
 		'yii\jui\EffectAsset',
-	);
+	];
 }

extensions/jui/yii/jui/AutoComplete.php

@@ -16,24 +16,24 @@ use yii\helpers\Html;
  * For example:
  *
  * ```php
- * echo AutoComplete::widget(array(
+ * echo AutoComplete::widget([
  *     'model' => $model,
  *     'attribute' => 'country',
- *     'clientOptions' => array(
+ *     'clientOptions' => [
- *         'source' => array('USA', 'RUS'),
+ *         'source' => ['USA', 'RUS'],
- *     ),
+ *     ],
- * ));
+ * ]);
  * ```
  *
  * The following example will use the name property instead:
  *
  * ```php
- * echo AutoComplete::widget(array(
+ * echo AutoComplete::widget([
  *     'name' => 'country',
- *     'clientOptions' => array(
+ *     'clientOptions' => [
- *         'source' => array('USA', 'RUS'),
+ *         'source' => ['USA', 'RUS'],
- *     ),
+ *     ],
- * ));
+ * ]);
  *```
  *
  * @see http://api.jqueryui.com/autocomplete/

extensions/jui/yii/jui/AutoCompleteAsset.php

@@ -15,11 +15,11 @@ use yii\web\AssetBundle;
 class AutoCompleteAsset extends AssetBundle
 {
 	public $sourcePath = '@yii/jui/assets';
-	public $js = array(
+	public $js = [
 		'jquery.ui.autocomplete.js',
-	);
+	];
-	public $depends = array(
+	public $depends = [
 		'yii\jui\CoreAsset',
 		'yii\jui\MenuAsset',
-	);
+	];
 }

extensions/jui/yii/jui/ButtonAsset.php

@@ -15,10 +15,10 @@ use yii\web\AssetBundle;
 class ButtonAsset extends AssetBundle
 {
 	public $sourcePath = '@yii/jui/assets';
-	public $js = array(
+	public $js = [
 		'jquery.ui.button.js',
-	);
+	];
-	public $depends = array(
+	public $depends = [
 		'yii\jui\CoreAsset',
-	);
+	];
 }

extensions/jui/yii/jui/CoreAsset.php

@@ -15,13 +15,13 @@ use yii\web\AssetBundle;
 class CoreAsset extends AssetBundle
 {
 	public $sourcePath = '@yii/jui/assets';
-	public $js = array(
+	public $js = [
 		'jquery.ui.core.js',
 		'jquery.ui.widget.js',
 		'jquery.ui.position.js',
 		'jquery.ui.mouse.js',
-	);
+	];
-	public $depends = array(
+	public $depends = [
 		'yii\web\JqueryAsset',
-	);
+	];
 }

extensions/jui/yii/jui/DatePicker.php

@@ -17,26 +17,26 @@ use yii\helpers\Json;
  * For example:
  *
  * ```php
- * echo DatePicker::widget(array(
+ * echo DatePicker::widget([
  *     'language' => 'ru',
  *     'model' => $model,
  *     'attribute' => 'country',
- *     'clientOptions' => array(
+ *     'clientOptions' => [
  *         'dateFormat' => 'yy-mm-dd',
- *     ),
+ *     ],
- * ));
+ * ]);
  * ```
  *
  * The following example will use the name property instead:
  *
  * ```php
- * echo DatePicker::widget(array(
+ * echo DatePicker::widget([
  *     'language' => 'ru',
  *     'name'  => 'country',
- *     'clientOptions' => array(
+ *     'clientOptions' => [
  *         'dateFormat' => 'yy-mm-dd',
- *     ),
+ *     ],
- * ));
+ * ]);
  *```
  *
  * @see http://api.jqueryui.com/datepicker/
@@ -84,7 +84,7 @@ class DatePicker extends InputWidget
 	 */
 	protected function renderWidget()
 	{
-		$contents = array();
+		$contents = [];
 
 		if ($this->inline === false) {
 			if ($this->hasModel()) {

extensions/jui/yii/jui/DatePickerAsset.php

@@ -15,11 +15,11 @@ use yii\web\AssetBundle;
 class DatePickerAsset extends AssetBundle
 {
 	public $sourcePath = '@yii/jui/assets';
-	public $js = array(
+	public $js = [
 		'jquery.ui.datepicker.js',
-	);
+	];
-	public $depends = array(
+	public $depends = [
 		'yii\jui\CoreAsset',
 		'yii\jui\EffectAsset',
-	);
+	];
 }

extensions/jui/yii/jui/DatePickerRegionalAsset.php

@@ -15,10 +15,10 @@ use yii\web\AssetBundle;
 class DatePickerRegionalAsset extends AssetBundle
 {
 	public $sourcePath = '@yii/jui/assets';
-	public $js = array(
+	public $js = [
 		'jquery.ui.datepicker-i18n.js',
-	);
+	];
-	public $depends = array(
+	public $depends = [
 		'yii\jui\DatePickerAsset',
-	);
+	];
 }

extensions/jui/yii/jui/Dialog.php

@@ -15,11 +15,11 @@ use yii\helpers\Html;
  * For example:
  *
  * ```php
- * Dialog::begin(array(
+ * Dialog::begin([
- *     'clientOptions' => array(
+ *     'clientOptions' => [
  *         'modal' => true,
- *     ),
+ *     ],
- * ));
+ * ]);
  *
  * echo 'Dialog contents here...';
  *

extensions/jui/yii/jui/DialogAsset.php

@@ -15,13 +15,13 @@ use yii\web\AssetBundle;
 class DialogAsset extends AssetBundle
 {
 	public $sourcePath = '@yii/jui/assets';
-	public $js = array(
+	public $js = [
 		'jquery.ui.dialog.js',
-	);
+	];
-	public $depends = array(
+	public $depends = [
 		'yii\jui\CoreAsset',
 		'yii\jui\ButtonAsset',
 		'yii\jui\DraggableAsset',
 		'yii\jui\ResizableAsset',
-	);
+	];
 }

extensions/jui/yii/jui/Draggable.php

@@ -15,11 +15,9 @@ use yii\helpers\Html;
  * For example:
  *
  * ```php
- * Draggable::begin(array(
+ * Draggable::begin([
- *     'clientOptions' => array(
+ *     'clientOptions' => ['grid' => [50, 20]],
- *         'grid' => array(50, 20),
+ * ]);
- *     ),
- * ));
  *
  * echo 'Draggable contents here...';
  *

extensions/jui/yii/jui/DraggableAsset.php

@@ -15,10 +15,10 @@ use yii\web\AssetBundle;
 class DraggableAsset extends AssetBundle
 {
 	public $sourcePath = '@yii/jui/assets';
-	public $js = array(
+	public $js = [
 		'jquery.ui.draggable.js',
-	);
+	];
-	public $depends = array(
+	public $depends = [
 		'yii\jui\CoreAsset',
-	);
+	];
 }

extensions/jui/yii/jui/Droppable.php

@@ -15,11 +15,9 @@ use yii\helpers\Html;
  * For example:
  *
  * ```php
- * Droppable::begin(array(
+ * Droppable::begin([
- *     'clientOptions' => array(
+ *     'clientOptions' => ['accept' => '.special'],
- *         'accept' => '.special',
+ * ]);
- *     ),
- * ));
  *
  * echo 'Droppable body here...';
  *

extensions/jui/yii/jui/DroppableAsset.php

@@ -15,10 +15,10 @@ use yii\web\AssetBundle;
 class DroppableAsset extends AssetBundle
 {
 	public $sourcePath = '@yii/jui/assets';
-	public $js = array(
+	public $js = [
 		'jquery.ui.droppable.js',
-	);
+	];
-	public $depends = array(
+	public $depends = [
 		'yii\jui\DraggableAsset',
-	);
+	];
 }

extensions/jui/yii/jui/EffectAsset.php

@@ -15,10 +15,10 @@ use yii\web\AssetBundle;
 class EffectAsset extends AssetBundle
 {
 	public $sourcePath = '@yii/jui/assets';
-	public $js = array(
+	public $js = [
 		'jquery.ui.effect-all.js',
-	);
+	];
-	public $depends = array(
+	public $depends = [
 		'yii\web\JqueryAsset',
-	);
+	];
 }

extensions/jui/yii/jui/Menu.php

@@ -25,14 +25,14 @@ class Menu extends \yii\widgets\Menu
 	 * For example, [this page](http://api.jqueryui.com/accordion/) shows
 	 * how to use the "Accordion" widget and the supported options (e.g. "header").
 	 */
-	public $clientOptions = array();
+	public $clientOptions = [];
 	/**
 	 * @var array the event handlers for the underlying jQuery UI widget.
 	 * Please refer to the corresponding jQuery UI widget Web page for possible events.
 	 * For example, [this page](http://api.jqueryui.com/accordion/) shows
 	 * how to use the "Accordion" widget and the supported events (e.g. "create").
 	 */
-	public $clientEvents = array();
+	public $clientEvents = [];
 
 
 	/**
@@ -68,7 +68,7 @@ class Menu extends \yii\widgets\Menu
 		}
 
 		if (!empty($this->clientEvents)) {
-			$js = array();
+			$js = [];
 			foreach ($this->clientEvents as $event => $handler) {
 				$js[] = "jQuery('#$id').on('menu$event', $handler);";
 			}

extensions/jui/yii/jui/MenuAsset.php

@@ -15,10 +15,10 @@ use yii\web\AssetBundle;
 class MenuAsset extends AssetBundle
 {
 	public $sourcePath = '@yii/jui/assets';
-	public $js = array(
+	public $js = [
 		'jquery.ui.menu.js',
-	);
+	];
-	public $depends = array(
+	public $depends = [
 		'yii\jui\CoreAsset',
-	);
+	];
 }

extensions/jui/yii/jui/ProgressBar.php

@@ -15,22 +15,20 @@ use yii\helpers\Html;
  * For example:
  *
  * ```php
- * echo ProgressBar::widget(array(
+ * echo ProgressBar::widget([
- *     'clientOptions' => array(
+ *     'clientOptions' => [
  *         'value' => 75,
- *     ),
+ *     ],
- * ));
+ * ]);
  * ```
  *
  * The following example will show the content enclosed between the [[begin()]]
  * and [[end()]] calls within the widget container:
  *
  * ~~~php
- * ProgressBar::widget(array(
+ * ProgressBar::widget([
- *     'clientOptions' => array(
+ *     'clientOptions' => ['value' => 75],
- *         'value' => 75,
+  * ]);
- *     ),
- * ));
  *
  * echo '<div class="progress-label">Loading...</div>';
  *

extensions/jui/yii/jui/ProgressBarAsset.php

@@ -15,10 +15,10 @@ use yii\web\AssetBundle;
 class ProgressBarAsset extends AssetBundle
 {
 	public $sourcePath = '@yii/jui/assets';
-	public $js = array(
+	public $js = [
 		'jquery.ui.progressbar.js',
-	);
+	];
-	public $depends = array(
+	public $depends = [
 		'yii\jui\CoreAsset',
-	);
+	];
 }

extensions/jui/yii/jui/Resizable.php

@@ -15,11 +15,11 @@ use yii\helpers\Html;
  * For example:
  *
  * ```php
- * Resizable::begin(array(
+ * Resizable::begin([
- *     'clientOptions' => array(
+ *     'clientOptions' => [
- *         'grid' => array(20, 10),
+ *         'grid' => [20, 10],
- *     ),
+ *     ],
- * ));
+ * ]);
  *
  * echo 'Resizable contents here...';
  *

extensions/jui/yii/jui/ResizableAsset.php

@@ -15,10 +15,10 @@ use yii\web\AssetBundle;
 class ResizableAsset extends AssetBundle
 {
 	public $sourcePath = '@yii/jui/assets';
-	public $js = array(
+	public $js = [
 		'jquery.ui.resizable.js',
-	);
+	];
-	public $depends = array(
+	public $depends = [
 		'yii\jui\CoreAsset',
-	);
+	];
 }

extensions/jui/yii/jui/Selectable.php

@@ -17,29 +17,29 @@ use yii\helpers\Html;
  * For example:
  *
  * ```php
- * echo Selectable::widget(array(
+ * echo Selectable::widget([
- *     'items' => array(
+ *     'items' => [
  *         'Item 1',
- *         array(
+ *         [
  *             'content' => 'Item2',
- *         ),
+ *         ],
- *         array(
+ *         [
  *             'content' => 'Item3',
- *             'options' => array(
+ *             'options' => [
  *                 'tag' => 'li',
+ *             ],
+ *         ],
  *     ),
- *         ),
+ *     'options' => [
- *     ),
- *     'options' => array(
  *         'tag' => 'ul',
- *     ),
+ *     ],
- *     'itemOptions' => array(
+ *     'itemOptions' => [
  *         'tag' => 'li',
- *     ),
+ *     ],
- *     'clientOptions' => array(
+ *     'clientOptions' => [
  *         'tolerance' => 'fit',
- *     ),
+ *     ],
- * ));
+ * ]);
  * ```
  *
  * @see http://api.jqueryui.com/selectable/
@@ -53,27 +53,27 @@ class Selectable extends Widget
 	 *
 	 * - tag: string, defaults to "ul", the tag name of the container tag of this widget
 	 */
-	public $options = array();
+	public $options = [];
 	/**
 	 * @var array list of selectable items. Each item can be a string representing the item content
 	 * or an array of the following structure:
 	 *
 	 * ~~~
-	 * array(
+	 * [
 	 *     'content' => 'item content',
 	 *     // the HTML attributes of the item container tag. This will overwrite "itemOptions".
-	 *     'options' => array(),
+	 *     'options' => [],
-	 * )
+	 * ]
 	 * ~~~
 	 */
-	public $items = array();
+	public $items = [];
 	/**
 	 * @var array list of HTML attributes for the item container tags. This will be overwritten
 	 * by the "options" set in individual [[items]]. The following special options are recognized:
 	 *
 	 * - tag: string, defaults to "li", the tag name of the item container tags.
 	 */
-	public $itemOptions = array();
+	public $itemOptions = [];
 
 
 	/**
@@ -96,7 +96,7 @@ class Selectable extends Widget
 	 */
 	public function renderItems()
 	{
-		$items = array();
+		$items = [];
 		foreach ($this->items as $item) {
 			$options = $this->itemOptions;
 			$tag = ArrayHelper::remove($options, 'tag', 'li');
@@ -104,7 +104,7 @@ class Selectable extends Widget
 				if (!isset($item['content'])) {
 					throw new InvalidConfigException("The 'content' option is required.");
 				}
-				$options = array_merge($options, ArrayHelper::getValue($item, 'options', array()));
+				$options = array_merge($options, ArrayHelper::getValue($item, 'options', []));
 				$tag = ArrayHelper::remove($options, 'tag', $tag);
 				$items[] = Html::tag($tag, $item['content'], $options);
 			} else {

extensions/jui/yii/jui/SelectableAsset.php

@@ -15,10 +15,10 @@ use yii\web\AssetBundle;
 class SelectableAsset extends AssetBundle
 {
 	public $sourcePath = '@yii/jui/assets';
-	public $js = array(
+	public $js = [
 		'jquery.ui.selectable.js',
-	);
+	];
-	public $depends = array(
+	public $depends = [
 		'yii\jui\CoreAsset',
-	);
+	];
 }

extensions/jui/yii/jui/Slider.php

@@ -16,26 +16,26 @@ use yii\helpers\Html;
  * For example:
  *
  * ```php
- * echo Slider::widget(array(
+ * echo Slider::widget([
  *     'model' => $model,
  *     'attribute' => 'amount',
- *     'clientOptions' => array(
+ *     'clientOptions' => [
  *         'min' => 1,
  *         'max' => 10,
- *     ),
+ *     ],
- * ));
+ * ]);
  * ```
  *
  * The following example will use the name property instead:
  *
  * ```php
- * echo Slider::widget(array(
+ * echo Slider::widget([
  *     'name'  => 'amount',
- *     'clientOptions' => array(
+ *     'clientOptions' => [
  *         'min' => 1,
  *         'max' => 10,
- *     ),
+ *     ],
- * ));
+ * ]);
  *```
  *
  * @see http://api.jqueryui.com/slider/

extensions/jui/yii/jui/SliderAsset.php

@@ -15,10 +15,10 @@ use yii\web\AssetBundle;
 class SliderAsset extends AssetBundle
 {
 	public $sourcePath = '@yii/jui/assets';
-	public $js = array(
+	public $js = [
 		'jquery.ui.slider.js',
-	);
+	];
-	public $depends = array(
+	public $depends = [
 		'yii\jui\CoreAsset',
-	);
+	];
 }

extensions/jui/yii/jui/Sortable.php

@@ -17,28 +17,18 @@ use yii\helpers\Html;
  * For example:
  *
  * ```php
- * echo Sortable::widget(array(
+ * echo Sortable::widget([
- *     'items' => array(
+ *     'items' => [
  *         'Item 1',
- *         array(
+ *         ['content' => 'Item2'],
- *             'content' => 'Item2',
+ *         [
- *         ),
- *         array(
  *             'content' => 'Item3',
- *             'options' => array(
+ *             'options' => ['tag' => 'li'],
- *                 'tag' => 'li',
+ *         ],
- *             ),
+ *     ],
- *         ),
+ *     'options' => ['tag' => 'ul'],
- *     ),
+ *     'itemOptions' => ['tag' => 'li'],
- *     'options' => array(
+ *     'clientOptions' => ['cursor' => 'move'],
- *         'tag' => 'ul',
- *     ),
- *     'itemOptions' => array(
- *         'tag' => 'li',
- *     ),
- *     'clientOptions' => array(
- *         'cursor' => 'move',
- *     ),
  * ));
  * ```
  *
@@ -53,27 +43,27 @@ class Sortable extends Widget
 	 *
 	 * - tag: string, defaults to "ul", the tag name of the container tag of this widget
 	 */
-	public $options = array();
+	public $options = [];
 	/**
 	 * @var array list of sortable items. Each item can be a string representing the item content
 	 * or an array of the following structure:
 	 *
 	 * ~~~
-	 * array(
+	 * [
 	 *     'content' => 'item content',
 	 *     // the HTML attributes of the item container tag. This will overwrite "itemOptions".
-	 *     'options' => array(),
+	 *     'options' => [],
-	 * )
+	 * ]
 	 * ~~~
 	 */
-	public $items = array();
+	public $items = [];
 	/**
 	 * @var array list of HTML attributes for the item container tags. This will be overwritten
 	 * by the "options" set in individual [[items]]. The following special options are recognized:
 	 *
 	 * - tag: string, defaults to "li", the tag name of the item container tags.
 	 */
-	public $itemOptions = array();
+	public $itemOptions = [];
 
 
 	/**
@@ -96,7 +86,7 @@ class Sortable extends Widget
 	 */
 	public function renderItems()
 	{
-		$items = array();
+		$items = [];
 		foreach ($this->items as $item) {
 			$options = $this->itemOptions;
 			$tag = ArrayHelper::remove($options, 'tag', 'li');
@@ -104,7 +94,7 @@ class Sortable extends Widget
 				if (!isset($item['content'])) {
 					throw new InvalidConfigException("The 'content' option is required.");
 				}
-				$options = array_merge($options, ArrayHelper::getValue($item, 'options', array()));
+				$options = array_merge($options, ArrayHelper::getValue($item, 'options', []));
 				$tag = ArrayHelper::remove($options, 'tag', $tag);
 				$items[] = Html::tag($tag, $item['content'], $options);
 			} else {

extensions/jui/yii/jui/SortableAsset.php

@@ -15,10 +15,10 @@ use yii\web\AssetBundle;
 class SortableAsset extends AssetBundle
 {
 	public $sourcePath = '@yii/jui/assets';
-	public $js = array(
+	public $js = [
 		'jquery.ui.sortable.js',
-	);
+	];
-	public $depends = array(
+	public $depends = [
 		'yii\jui\CoreAsset',
-	);
+	];
 }

extensions/jui/yii/jui/Spinner.php

@@ -16,24 +16,20 @@ use yii\helpers\Html;
  * For example:
  *
  * ```php
- * echo Spinner::widget(array(
+ * echo Spinner::widget([
  *     'model' => $model,
  *     'attribute' => 'country',
- *     'clientOptions' => array(
+ *     'clientOptions' => ['step' => 2],
- *         'step' => 2,
+ * ]);
- *     ),
- * ));
  * ```
  *
  * The following example will use the name property instead:
  *
  * ```php
- * echo Spinner::widget(array(
+ * echo Spinner::widget([
  *     'name'  => 'country',
- *     'clientOptions' => array(
+ *     'clientOptions' => ['step' => 2],
- *         'step' => 2,
+ * ]);
- *     ),
- * ));
  *```
  *
  * @see http://api.jqueryui.com/spinner/

extensions/jui/yii/jui/SpinnerAsset.php

@@ -15,11 +15,11 @@ use yii\web\AssetBundle;
 class SpinnerAsset extends AssetBundle
 {
 	public $sourcePath = '@yii/jui/assets';
-	public $js = array(
+	public $js = [
 		'jquery.ui.spinner.js',
-	);
+	];
-	public $depends = array(
+	public $depends = [
 		'yii\jui\CoreAsset',
 		'yii\jui\ButtonAsset',
-	);
+	];
 }

extensions/jui/yii/jui/Tabs.php

@@ -17,47 +17,33 @@ use yii\helpers\Html;
  * For example:
  *
  * ```php
- * echo Tabs::widget(array(
+ * echo Tabs::widget([
- *     'items' => array(
+ *     'items' => [
- *         array(
+ *         [
  *             'label' => 'Tab one',
  *             'content' => 'Mauris mauris ante, blandit et, ultrices a, suscipit eget...',
- *         ),
+ *         ],
- *         array(
+ *         [
  *             'label' => 'Tab two',
  *             'content' => 'Sed non urna. Phasellus eu ligula. Vestibulum sit amet purus...',
- *             'options' => array(
+ *             'options' => ['tag' => 'div'],
- *                 'tag' => 'div',
+ *             'headerOptions' => ['class' => 'my-class'],
- *             ),
+ *         ],
- *             'headerOptions' => array(
+ *         [
- *                 'class' => 'my-class',
- *             ),
- *         ),
- *         array(
  *             'label' => 'Tab with custom id',
  *             'content' => 'Morbi tincidunt, dui sit amet facilisis feugiat...',
- *             'options' => array(
+ *             'options' => ['id' => 'my-tab'],
- *                'id' => 'my-tab',
+ *         ],
- *             ),
+ *         [
- *         ),
- *         array(
  *             'label' => 'Ajax tab',
- *             'url' => array('ajax/content'),
+ *             'url' => ['ajax/content'],
- *         ),
+ *         ],
- *     ),
- *     'options' => array(
- *         'tag' => 'div',
- *     ),
- *     'itemOptions' => array(
- *         'tag' => 'div',
- *     ),
- *     'headerOptions' => array(
- *         'class' => 'my-class',
- *     ),
- *     'clientOptions' => array(
- *         'collapsible' => false,
  *     ),
- * ));
+ *     'options' => ['tag' => 'div'],
+ *     'itemOptions' => ['tag' => 'div'],
+ *     'headerOptions' => ['class' => 'my-class'],
+ *     'clientOptions' => ['collapsible' => false],
+ * ]);
  * ```
  *
  * @see http://api.jqueryui.com/tabs/
@@ -71,7 +57,7 @@ class Tabs extends Widget
 	 *
 	 * - tag: string, defaults to "div", the tag name of the container tag of this widget
 	 */
-	public $options = array();
+	public $options = [];
 	/**
 	 * @var array list of tab items. Each item can be an array of the following structure:
 	 *
@@ -84,19 +70,19 @@ class Tabs extends Widget
 	 * - options: array, optional, the HTML attributes of the header.
 	 * - headerOptions: array, optional, the HTML attributes for the header container tag.
 	 */
-	public $items = array();
+	public $items = [];
 	/**
 	 * @var array list of HTML attributes for the item container tags. This will be overwritten
 	 * by the "options" set in individual [[items]]. The following special options are recognized:
 	 *
 	 * - tag: string, defaults to "div", the tag name of the item container tags.
 	 */
-	public $itemOptions = array();
+	public $itemOptions = [];
 	/**
 	 * @var array list of HTML attributes for the header container tags. This will be overwritten
 	 * by the "headerOptions" set in individual [[items]].
 	 */
-	public $headerOptions = array();
+	public $headerOptions = [];
 	/**
 	 * @var string the default header template to render the link.
 	 */
@@ -127,8 +113,8 @@ class Tabs extends Widget
 	 */
 	protected function renderItems()
 	{
-		$headers = array();
+		$headers = [];
-		$items = array();
+		$items = [];
 		foreach ($this->items as $n => $item) {
 			if (!isset($item['label'])) {
 				throw new InvalidConfigException("The 'label' option is required.");
@@ -139,7 +125,7 @@ class Tabs extends Widget
 				if (!isset($item['content'])) {
 					throw new InvalidConfigException("The 'content' or 'url' option is required.");
 				}
-				$options = array_merge($this->itemOptions, ArrayHelper::getValue($item, 'options', array()));
+				$options = array_merge($this->itemOptions, ArrayHelper::getValue($item, 'options', []));
 				$tag = ArrayHelper::remove($options, 'tag', 'div');
 				if (!isset($options['id'])) {
 					$options['id'] = $this->options['id'] . '-tab' . $n;
@@ -147,12 +133,12 @@ class Tabs extends Widget
 				$url = '#' . $options['id'];
 				$items[] = Html::tag($tag, $item['content'], $options);
 			}
-			$headerOptions = array_merge($this->headerOptions, ArrayHelper::getValue($item, 'headerOptions', array()));
+			$headerOptions = array_merge($this->headerOptions, ArrayHelper::getValue($item, 'headerOptions', []));
 			$template = ArrayHelper::getValue($item, 'template', $this->linkTemplate);
-			$headers[] = Html::tag('li', strtr($template, array(
+			$headers[] = Html::tag('li', strtr($template, [
 				'{label}' => $this->encodeLabels ? Html::encode($item['label']) : $item['label'],
 				'{url}' => $url,
-			)), $headerOptions);
+			]), $headerOptions);
 		}
 		return Html::tag('ul', implode("\n", $headers)) . "\n" . implode("\n", $items);
 	}

extensions/jui/yii/jui/TabsAsset.php

@@ -15,11 +15,11 @@ use yii\web\AssetBundle;
 class TabsAsset extends AssetBundle
 {
 	public $sourcePath = '@yii/jui/assets';
-	public $js = array(
+	public $js = [
 		'jquery.ui.tabs.js',
-	);
+	];
-	public $depends = array(
+	public $depends = [
 		'yii\jui\CoreAsset',
 		'yii\jui\EffectAsset',
-	);
+	];
 }

extensions/jui/yii/jui/ThemeAsset.php

@@ -15,7 +15,7 @@ use yii\web\AssetBundle;
 class ThemeAsset extends AssetBundle
 {
 	public $sourcePath = '@yii/jui/assets';
-	public $css = array(
+	public $css = [
 		'theme/jquery.ui.css',
-	);
+	];
 }

extensions/jui/yii/jui/TooltipAsset.php

@@ -15,11 +15,11 @@ use yii\web\AssetBundle;
 class TooltipAsset extends AssetBundle
 {
 	public $sourcePath = '@yii/jui/assets';
-	public $js = array(
+	public $js = [
 		'jquery.ui.tooltip.js',
-	);
+	];
-	public $depends = array(
+	public $depends = [
 		'yii\jui\CoreAsset',
 		'yii\jui\EffectAsset',
-	);
+	];
 }

extensions/jui/yii/jui/Widget.php

@@ -26,21 +26,21 @@ class Widget extends \yii\base\Widget
 	/**
 	 * @var array the HTML attributes for the widget container tag.
 	 */
-	public $options = array();
+	public $options = [];
 	/**
 	 * @var array the options for the underlying jQuery UI widget.
 	 * Please refer to the corresponding jQuery UI widget Web page for possible options.
 	 * For example, [this page](http://api.jqueryui.com/accordion/) shows
 	 * how to use the "Accordion" widget and the supported options (e.g. "header").
 	 */
-	public $clientOptions = array();
+	public $clientOptions = [];
 	/**
 	 * @var array the event handlers for the underlying jQuery UI widget.
 	 * Please refer to the corresponding jQuery UI widget Web page for possible events.
 	 * For example, [this page](http://api.jqueryui.com/accordion/) shows
 	 * how to use the "Accordion" widget and the supported events (e.g. "create").
 	 */
-	public $clientEvents = array();
+	public $clientEvents = [];
 
 
 	/**
@@ -77,7 +77,7 @@ class Widget extends \yii\base\Widget
 		}
 
 		if (!empty($this->clientEvents)) {
-			$js = array();
+			$js = [];
 			foreach ($this->clientEvents as $event => $handler) {
 				$js[] = "jQuery('#$id').on('$name$event', $handler);";
 			}

extensions/jui/yii/jui/assets.php

@@ -1,6 +1,6 @@
 <?php
 
-return array(
+return [
 	yii\jui\CoreAsset::className(),
 	yii\jui\EffectAsset::className(),
 	yii\jui\AccordionAsset::className(),
@@ -20,4 +20,4 @@ return array(
 	yii\jui\DraggableAsset::className(),
 	yii\jui\DroppableAsset::className(),
 	yii\jui\MenuAsset::className(),
-);
+];

extensions/mutex/yii/mutex/FileMutex.php

@@ -38,7 +38,7 @@ class FileMutex extends Mutex
 	/**
 	 * @var resource[] stores all opened lock files. Keys are lock names and values are file handles.
 	 */
-	private $_files = array();
+	private $_files = [];
 
 
 	/**

extensions/mutex/yii/mutex/Mutex.php

@@ -25,7 +25,7 @@ abstract class Mutex extends Component
 	/**
 	 * @var string[] names of the locks acquired in the current PHP process.
 	 */
-	private $_locks = array();
+	private $_locks = [];
 
 
 	/**

extensions/mutex/yii/mutex/MysqlMutex.php

@@ -38,7 +38,7 @@ class MysqlMutex extends Mutex
 	protected function acquireLock($name, $timeout = 0)
 	{
 		return (boolean)$this->db
-			->createCommand('SELECT GET_LOCK(:name, :timeout)', array(':name' => $name, ':timeout' => $timeout))
+			->createCommand('SELECT GET_LOCK(:name, :timeout)', [':name' => $name, ':timeout' => $timeout])
 			->queryScalar();
 	}
 
@@ -51,7 +51,7 @@ class MysqlMutex extends Mutex
 	protected function releaseLock($name)
 	{
 		return (boolean)$this->db
-			->createCommand('SELECT RELEASE_LOCK(:name)', array(':name' => $name))
+			->createCommand('SELECT RELEASE_LOCK(:name)', [':name' => $name])
 			->queryScalar();
 	}
 }

extensions/smarty/README.md

@@ -45,20 +45,20 @@ Example:
 ```php
 <?php
 // config.php
-return array(
+return [
 	//....
-	'components' => array(
+	'components' => [
-		'view' => array(
+		'view' => [
 			'class' => 'yii\base\View',
-			'renderers' => array(
+			'renderers' => [
-				'tpl' => array(
+				'tpl' => [
 					'class' => 'yii\smarty\ViewRenderer',
 					//'cachePath' => '@runtime/Smarty/cache',
-				),
+				],
-			),
+			],
-		),
+		],
-	),
+	],
-);
+];
 ```
 
 For further instructions refer to the related section in the yii guide.

extensions/smarty/yii/smarty/ViewRenderer.php

@@ -44,7 +44,7 @@ class ViewRenderer extends BaseViewRenderer
 		$this->smarty->setCompileDir(Yii::getAlias($this->compilePath));
 		$this->smarty->setCacheDir(Yii::getAlias($this->cachePath));
 
-		$this->smarty->registerPlugin('function', 'path', array($this, 'smarty_function_path'));
+		$this->smarty->registerPlugin('function', 'path', [$this, 'smarty_function_path']);
 	}
 
 	/**

extensions/twig/README.md

@@ -44,21 +44,21 @@ Example:
 ```php
 <?php
 // config.php
-return array(
+return [
 	//....
-	'components' => array(
+	'components' => [
-		'view' => array(
+		'view' => [
 			'class' => 'yii\base\View',
-			'renderers' => array(
+			'renderers' => [
-				'twig' => array(
+				'twig' => [
 					'class' => 'yii\twig\ViewRenderer',
 					//'cachePath' => '@runtime/Twig/cache',
-					//'options' => array(), /*  Array of twig options */
+					//'options' => [], /*  Array of twig options */
-				),
+				],
-			),
+			],
-		),
+		],
-	),
+	],
-);
+];
 ```
 
 For further instructions refer to the related section in the yii guide.

extensions/twig/yii/twig/ViewRenderer.php

@@ -31,7 +31,7 @@ class ViewRenderer extends BaseViewRenderer
 	 * @var array Twig options
 	 * @see http://twig.sensiolabs.org/doc/api.html#environment-options
 	 */
-	public $options = array();
+	public $options = [];
 
 	/**
 	 * @var \Twig_Environment
@@ -42,12 +42,12 @@ class ViewRenderer extends BaseViewRenderer
 	{
 		$loader = new \Twig_Loader_String();
 
-		$this->twig = new \Twig_Environment($loader, array_merge(array(
+		$this->twig = new \Twig_Environment($loader, array_merge([
 			'cache' => Yii::getAlias($this->cachePath),
-		), $this->options));
+		], $this->options));
 
-		$this->twig->addFunction('path', new \Twig_Function_Function(function ($path, $args = array()) {
+		$this->twig->addFunction('path', new \Twig_Function_Function(function ($path, $args = []) {
-			return Html::url(array_merge(array($path), $args));
+			return Html::url(array_merge([$path], $args));
 		}));
 
 		$this->twig->addGlobal('app', \Yii::$app);

framework/yii/BaseYii.php

@@ -67,7 +67,7 @@ class BaseYii
 	 * @see import
 	 * @see autoload
 	 */
-	public static $classMap = array();
+	public static $classMap = [];
 	/**
 	 * @var \yii\console\Application|\yii\web\Application the application instance
 	 */
@@ -77,28 +77,28 @@ class BaseYii
 	 * @see getAlias
 	 * @see setAlias
 	 */
-	public static $aliases = array('@yii' => __DIR__);
+	public static $aliases = ['@yii' => __DIR__];
 	/**
 	 * @var array initial property values that will be applied to objects newly created via [[createObject]].
 	 * The array keys are class names without leading backslashes "\", and the array values are the corresponding
 	 * name-value pairs for initializing the created class instances. For example,
 	 *
 	 * ~~~
-	 * array(
+	 * [
-	 *     'Bar' => array(
+	 *     'Bar' => [
 	 *         'prop1' => 'value1',
 	 *         'prop2' => 'value2',
-	 *     ),
+	 *     ],
-	 *     'mycompany\foo\Car' => array(
+	 *     'mycompany\foo\Car' => [
 	 *         'prop1' => 'value1',
 	 *         'prop2' => 'value2',
-	 *     ),
+	 *     ],
-	 * )
+	 * ]
 	 * ~~~
 	 *
 	 * @see createObject
 	 */
-	public static $objectConfig = array();
+	public static $objectConfig = [];
 
 
 	/**
@@ -127,7 +127,7 @@ class BaseYii
 	{
 		foreach ($namespaces as $name => $path) {
 			if ($name !== '') {
-				$name = trim(strtr($name, array('\\' => '/', '_' => '/')), '/');
+				$name = trim(strtr($name, ['\\' => '/', '_' => '/']), '/');
 				if (is_array($path)) {
 					$path = reset($path);
 				}
@@ -262,16 +262,16 @@ class BaseYii
 				if ($pos === false) {
 					self::$aliases[$root] = $path;
 				} else {
-					self::$aliases[$root] = array($alias => $path);
+					self::$aliases[$root] = [$alias => $path];
 				}
 			} elseif (is_string(self::$aliases[$root])) {
 				if ($pos === false) {
 					self::$aliases[$root] = $path;
 				} else {
-					self::$aliases[$root] = array(
+					self::$aliases[$root] = [
 						$alias => $path,
 						$root => self::$aliases[$root],
-					);
+					];
 				}
 			} else {
 				self::$aliases[$root][$alias] = $path;
@@ -360,17 +360,17 @@ class BaseYii
 	 *
 	 * ~~~
 	 * $object = \Yii::createObject('@app/components/GoogleMap');
-	 * $object = \Yii::createObject(array(
+	 * $object = \Yii::createObject([
 	 *     'class' => '\app\components\GoogleMap',
 	 *     'apiKey' => 'xyz',
-	 * ));
+	 * ]);
 	 * ~~~
 	 *
 	 * This method can be used to create any object as long as the object's constructor is
 	 * defined like the following:
 	 *
 	 * ~~~
-	 * public function __construct(..., $config = array()) {
+	 * public function __construct(..., $config = []) {
 	 * }
 	 * ~~~
 	 *
@@ -384,11 +384,11 @@ class BaseYii
 	 */
 	public static function createObject($config)
 	{
-		static $reflections = array();
+		static $reflections = [];
 
 		if (is_string($config)) {
 			$class = $config;
-			$config = array();
+			$config = [];
 		} elseif (isset($config['class'])) {
 			$class = $config['class'];
 			unset($config['class']);
@@ -538,7 +538,7 @@ class BaseYii
 	 * [[\yii\base\Application::language|application language]] will be used.
 	 * @return string the translated message.
 	 */
-	public static function t($category, $message, $params = array(), $language = null)
+	public static function t($category, $message, $params = [], $language = null)
 	{
 		if (self::$app !== null) {
 			return self::$app->getI18n()->translate($category, $message, $params, $language ?: self::$app->language);

framework/yii/Yii.php

@@ -22,5 +22,5 @@ class Yii extends \yii\BaseYii
 {
 }
 
-spl_autoload_register(array('Yii', 'autoload'), true, true);
+spl_autoload_register(['Yii', 'autoload'], true, true);
 Yii::$classMap = include(__DIR__ . '/classes.php');

framework/yii/assets.php

@@ -1,6 +1,6 @@
 <?php
 
-return array(
+return [
 	yii\web\YiiAsset::className(),
 	yii\web\JqueryAsset::className(),
 	yii\validators\PunycodeAsset::className(),
@@ -8,4 +8,4 @@ return array(
 	yii\widgets\ActiveFormAsset::className(),
 	yii\captcha\CaptchaAsset::className(),
 	yii\widgets\MaskedInputAsset::className(),
-);
+];

framework/yii/base/Action.php

@@ -25,7 +25,7 @@ use Yii;
  * public function run($id, $type = 'book') { ... }
  * ~~~
  *
- * And the parameters provided for the action are: `array('id' => 1)`.
+ * And the parameters provided for the action are: `['id' => 1]`.
  * Then the `run()` method will be invoked as `run(1)` automatically.
  *
  * @property string $uniqueId The unique ID of this action among the whole application. This property is
@@ -51,7 +51,7 @@ class Action extends Component
 	 * @param Controller $controller the controller that owns this action
 	 * @param array $config name-value pairs that will be used to initialize the object properties
 	 */
-	public function __construct($id, $controller, $config = array())
+	public function __construct($id, $controller, $config = [])
 	{
 		$this->id = $id;
 		$this->controller = $controller;
@@ -84,6 +84,6 @@ class Action extends Component
 		if (Yii::$app->requestedParams === null) {
 			Yii::$app->requestedParams = $args;
 		}
-		return call_user_func_array(array($this, 'run'), $args);
+		return call_user_func_array([$this, 'run'], $args);
 	}
 }

framework/yii/base/ActionEvent.php

@@ -37,7 +37,7 @@ class ActionEvent extends Event
 	 * @param Action $action the action associated with this action event.
 	 * @param array $config name-value pairs that will be used to initialize the object properties
 	 */
-	public function __construct($action, $config = array())
+	public function __construct($action, $config = [])
 	{
 		$this->action = $action;
 		parent::__construct($config);

framework/yii/base/ActionFilter.php

@@ -24,7 +24,7 @@ class ActionFilter extends Behavior
 	 * @var array list of action IDs that this filter should not apply to.
 	 * @see only
 	 */
-	public $except = array();
+	public $except = [];
 
 	/**
 	 * Declares event handlers for the [[owner]]'s events.
@@ -32,10 +32,10 @@ class ActionFilter extends Behavior
 	 */
 	public function events()
 	{
-		return array(
+		return [
 			Controller::EVENT_BEFORE_ACTION => 'beforeFilter',
 			Controller::EVENT_AFTER_ACTION => 'afterFilter',
-		);
+		];
 	}
 
 	/**

framework/yii/base/Application.php

@@ -80,7 +80,7 @@ abstract class Application extends Module
 	/**
 	 * @var array IDs of the components that need to be loaded when the application starts.
 	 */
-	public $preload = array();
+	public $preload = [];
 	/**
 	 * @var Controller the currently active controller instance
 	 */
@@ -121,7 +121,7 @@ abstract class Application extends Module
 	 * Note that the configuration must contain both [[id]] and [[basePath]].
 	 * @throws InvalidConfigException if either [[id]] or [[basePath]] configuration is missing.
 	 */
-	public function __construct($config = array())
+	public function __construct($config = [])
 	{
 		Yii::$app = $this;
 		if (!isset($config['id'])) {
@@ -188,12 +188,12 @@ abstract class Application extends Module
 	{
 		if (YII_ENABLE_ERROR_HANDLER) {
 			ini_set('display_errors', 0);
-			set_exception_handler(array($this, 'handleException'));
+			set_exception_handler([$this, 'handleException']);
-			set_error_handler(array($this, 'handleError'), error_reporting());
+			set_error_handler([$this, 'handleError'], error_reporting());
 			if ($this->memoryReserveSize > 0) {
 				$this->_memoryReserve = str_repeat('x', $this->memoryReserveSize);
 			}
-			register_shutdown_function(array($this, 'handleFatalError'));
+			register_shutdown_function([$this, 'handleFatalError']);
 		}
 	}
 
@@ -403,26 +403,14 @@ abstract class Application extends Module
 	 */
 	public function registerCoreComponents()
 	{
-		$this->setComponents(array(
+		$this->setComponents([
-			'log' => array(
+			'log' => ['class' => 'yii\log\Logger'],
-				'class' => 'yii\log\Logger',
+			'errorHandler' => ['class' => 'yii\base\ErrorHandler'],
-			),
+			'formatter' => ['class' => 'yii\base\Formatter'],
-			'errorHandler' => array(
+			'i18n' => ['class' => 'yii\i18n\I18N'],
-				'class' => 'yii\base\ErrorHandler',
+			'urlManager' => ['class' => 'yii\web\UrlManager'],
-			),
+			'view' => ['class' => 'yii\base\View'],
-			'formatter' => array(
+		]);
-				'class' => 'yii\base\Formatter',
-			),
-			'i18n' => array(
-				'class' => 'yii\i18n\I18N',
-			),
-			'urlManager' => array(
-				'class' => 'yii\web\UrlManager',
-			),
-			'view' => array(
-				'class' => 'yii\base\View',
-			),
-		));
 	}
 
 	/**

framework/yii/base/Behavior.php

@@ -37,25 +37,25 @@ class Behavior extends \yii\base\Object
 	 *
 	 * The callbacks can be any of the followings:
 	 *
-	 * - method in this behavior: `'handleClick'`, equivalent to `array($this, 'handleClick')`
+	 * - method in this behavior: `'handleClick'`, equivalent to `[$this, 'handleClick']`
-	 * - object method: `array($object, 'handleClick')`
+	 * - object method: `[$object, 'handleClick']`
-	 * - static method: `array('Page', 'handleClick')`
+	 * - static method: `['Page', 'handleClick']`
 	 * - anonymous function: `function($event) { ... }`
 	 *
 	 * The following is an example:
 	 *
 	 * ~~~
-	 * array(
+	 * [
 	 *	 'beforeValidate' => 'myBeforeValidate',
 	 *	 'afterValidate' => 'myAfterValidate',
-	 * )
+	 * ]
 	 * ~~~
 	 *
 	 * @return array events (array keys) and the corresponding event handler methods (array values).
 	 */
 	public function events()
 	{
-		return array();
+		return [];
 	}
 
 	/**
@@ -69,7 +69,7 @@ class Behavior extends \yii\base\Object
 	{
 		$this->owner = $owner;
 		foreach ($this->events() as $event => $handler) {
-			$owner->on($event, is_string($handler) ? array($this, $handler) : $handler);
+			$owner->on($event, is_string($handler) ? [$this, $handler] : $handler);
 		}
 	}
 
@@ -83,7 +83,7 @@ class Behavior extends \yii\base\Object
 	{
 		if ($this->owner) {
 			foreach ($this->events() as $event => $handler) {
-				$this->owner->off($event, is_string($handler) ? array($this, $handler) : $handler);
+				$this->owner->off($event, is_string($handler) ? [$this, $handler] : $handler);
 			}
 			$this->owner = null;
 		}

framework/yii/base/Component.php

@@ -195,7 +195,7 @@ class Component extends Object
 		$this->ensureBehaviors();
 		foreach ($this->_behaviors as $object) {
 			if ($object->hasMethod($name)) {
-				return call_user_func_array(array($object, $name), $params);
+				return call_user_func_array([$object, $name], $params);
 			}
 		}
 
@@ -329,11 +329,11 @@ class Component extends Object
 	 * the behavior class or an array of the following structure:
 	 *
 	 * ~~~
-	 * 'behaviorName' => array(
+	 * 'behaviorName' => [
 	 *     'class' => 'BehaviorClass',
 	 *     'property1' => 'value1',
 	 *     'property2' => 'value2',
-	 * )
+	 * ]
 	 * ~~~
 	 *
 	 * Note that a behavior class must extend from [[Behavior]]. Behavior names can be strings
@@ -347,7 +347,7 @@ class Component extends Object
 	 */
 	public function behaviors()
 	{
-		return array();
+		return [];
 	}
 
 	/**
@@ -369,8 +369,8 @@ class Component extends Object
 	 *
 	 * ~~~
 	 * function ($event) { ... }         // anonymous function
-	 * array($object, 'handleClick')    // $object->handleClick()
+	 * [$object, 'handleClick']          // $object->handleClick()
-	 * array('Page', 'handleClick')     // Page::handleClick()
+	 * ['Page', 'handleClick']           // Page::handleClick()
 	 * 'handleClick'                     // global function handleClick()
 	 * ~~~
 	 *
@@ -391,7 +391,7 @@ class Component extends Object
 	public function on($name, $handler, $data = null)
 	{
 		$this->ensureBehaviors();
-		$this->_events[$name][] = array($handler, $data);
+		$this->_events[$name][] = [$handler, $data];
 	}
 
 	/**
@@ -408,7 +408,7 @@ class Component extends Object
 		$this->ensureBehaviors();
 		if (isset($this->_events[$name])) {
 			if ($handler === null) {
-				$this->_events[$name] = array();
+				$this->_events[$name] = [];
 			} else {
 				$removed = false;
 				foreach ($this->_events[$name] as $i => $event) {
@@ -543,7 +543,7 @@ class Component extends Object
 				$this->detachBehavior($name);
 			}
 		}
-		$this->_behaviors = array();
+		$this->_behaviors = [];
 	}
 
 	/**
@@ -552,7 +552,7 @@ class Component extends Object
 	public function ensureBehaviors()
 	{
 		if ($this->_behaviors === null) {
-			$this->_behaviors = array();
+			$this->_behaviors = [];
 			foreach ($this->behaviors() as $name => $behavior) {
 				$this->attachBehaviorInternal($name, $behavior);
 			}

framework/yii/base/Controller.php

@@ -72,7 +72,7 @@ class Controller extends Component
 	 * @param Module $module the module that this controller belongs to.
 	 * @param array $config name-value pairs that will be used to initialize the object properties
 	 */
-	public function __construct($id, $module, $config = array())
+	public function __construct($id, $module, $config = [])
 	{
 		$this->id = $id;
 		$this->module = $module;
@@ -86,14 +86,14 @@ class Controller extends Component
 	 * action class names or action configuration arrays. For example,
 	 *
 	 * ~~~
-	 * return array(
+	 * return [
 	 *     'action1' => '@app/components/Action1',
-	 *     'action2' => array(
+	 *     'action2' => [
 	 *         'class' => '@app/components/Action2',
 	 *         'property1' => 'value1',
 	 *         'property2' => 'value2',
-	 *     ),
+	 *     ],
-	 * );
+	 * ];
 	 * ~~~
 	 *
 	 * [[\Yii::createObject()]] will be used later to create the requested action
@@ -101,7 +101,7 @@ class Controller extends Component
 	 */
 	public function actions()
 	{
-		return array();
+		return [];
 	}
 
 	/**
@@ -113,7 +113,7 @@ class Controller extends Component
 	 * @throws InvalidRouteException if the requested action ID cannot be resolved into an action successfully.
 	 * @see createAction
 	 */
-	public function runAction($id, $params = array())
+	public function runAction($id, $params = [])
 	{
 		$action = $this->createAction($id);
 		if ($action !== null) {
@@ -152,7 +152,7 @@ class Controller extends Component
 	 * @see runAction
 	 * @see forward
 	 */
-	public function run($route, $params = array())
+	public function run($route, $params = [])
 	{
 		$pos = strpos($route, '/');
 		if ($pos === false) {
@@ -173,7 +173,7 @@ class Controller extends Component
 	 */
 	public function bindActionParams($action, $params)
 	{
-		return array();
+		return [];
 	}
 
 	/**
@@ -244,7 +244,7 @@ class Controller extends Component
 	 */
 	public function getActionParams()
 	{
-		return array();
+		return [];
 	}
 
 	/**
@@ -303,13 +303,13 @@ class Controller extends Component
 	 * @return string the rendering result.
 	 * @throws InvalidParamException if the view file or the layout file does not exist.
 	 */
-	public function render($view, $params = array())
+	public function render($view, $params = [])
 	{
 		$viewFile = $this->findViewFile($view);
 		$output = $this->getView()->renderFile($viewFile, $params, $this);
 		$layoutFile = $this->findLayoutFile();
 		if ($layoutFile !== false) {
-			return $this->getView()->renderFile($layoutFile, array('content' => $output), $this);
+			return $this->getView()->renderFile($layoutFile, ['content' => $output], $this);
 		} else {
 			return $output;
 		}
@@ -323,7 +323,7 @@ class Controller extends Component
 	 * @return string the rendering result.
 	 * @throws InvalidParamException if the view file does not exist.
 	 */
-	public function renderPartial($view, $params = array())
+	public function renderPartial($view, $params = [])
 	{
 		$viewFile = $this->findViewFile($view);
 		return $this->getView()->renderFile($viewFile, $params, $this);
@@ -336,7 +336,7 @@ class Controller extends Component
 	 * @return string the rendering result.
 	 * @throws InvalidParamException if the view file does not exist.
 	 */
-	public function renderFile($file, $params = array())
+	public function renderFile($file, $params = [])
 	{
 		return $this->getView()->renderFile($file, $params, $this);
 	}

framework/yii/base/ErrorException.php

@@ -51,7 +51,7 @@ class ErrorException extends Exception
 				}
 
 				// XDebug has a different key name
-				$frame['args'] = array();
+				$frame['args'] = [];
 				if (isset($frame['params']) && !isset($frame['args'])) {
 					$frame['args'] = $frame['params'];
 				}
@@ -81,7 +81,7 @@ class ErrorException extends Exception
 	 */
 	public static function isFatalError($error)
 	{
-		return isset($error['type']) && in_array($error['type'], array(E_ERROR, E_PARSE, E_CORE_ERROR, E_CORE_WARNING, E_COMPILE_ERROR, E_COMPILE_WARNING));
+		return isset($error['type']) && in_array($error['type'], [E_ERROR, E_PARSE, E_CORE_ERROR, E_CORE_WARNING, E_COMPILE_ERROR, E_COMPILE_WARNING]);
 	}
 
 	/**
@@ -89,7 +89,7 @@ class ErrorException extends Exception
 	 */
 	public function getName()
 	{
-		$names = array(
+		$names = [
 			E_ERROR => Yii::t('yii', 'Fatal Error'),
 			E_PARSE => Yii::t('yii', 'Parse Error'),
 			E_CORE_ERROR => Yii::t('yii', 'Core Error'),
@@ -103,7 +103,7 @@ class ErrorException extends Exception
 			E_NOTICE => Yii::t('yii', 'Notice'),
 			E_RECOVERABLE_ERROR => Yii::t('yii', 'Recoverable Error'),
 			E_DEPRECATED => Yii::t('yii', 'Deprecated'),
-		);
+		];
 		return isset($names[$this->getCode()]) ? $names[$this->getCode()] : Yii::t('yii', 'Error');
 	}
 }

framework/yii/base/ErrorHandler.php

@@ -112,19 +112,19 @@ class ErrorHandler extends Component
 					ini_set('display_errors', 1);
 				}
 				$file = $useErrorView ? $this->errorView : $this->exceptionView;
-				$response->data = $this->renderFile($file, array(
+				$response->data = $this->renderFile($file, [
 					'exception' => $exception,
-				));
+				]);
 			}
 		} elseif ($exception instanceof Arrayable) {
 			$response->data = $exception;
 		} else {
-			$response->data = array(
+			$response->data = [
 				'type' => get_class($exception),
 				'name' => 'Exception',
 				'message' => $exception->getMessage(),
 				'code' => $exception->getCode(),
-			);
+			];
 		}
 
 		if ($exception instanceof HttpException) {
@@ -212,9 +212,7 @@ class ErrorHandler extends Component
 	public function renderPreviousExceptions($exception)
 	{
 		if (($previous = $exception->getPrevious()) !== null) {
-			return $this->renderFile($this->previousExceptionView, array(
+			return $this->renderFile($this->previousExceptionView, ['exception' => $previous]);
-				'exception' => $previous,
-			));
 		} else {
 			return '';
 		}
@@ -231,7 +229,7 @@ class ErrorHandler extends Component
 	 */
 	public function renderCallStackItem($file, $line, $class, $method, $index)
 	{
-		$lines = array();
+		$lines = [];
 		$begin = $end = 0;
 		if ($file !== null && $line !== null) {
 			$line--; // adjust line number from one-based to zero-based
@@ -245,7 +243,7 @@ class ErrorHandler extends Component
 			$end = $line + $half < $lineCount ? $line + $half : $lineCount - 1;
 		}
 
-		return $this->renderFile($this->callStackItemView, array(
+		return $this->renderFile($this->callStackItemView, [
 			'file' => $file,
 			'line' => $line,
 			'class' => $class,
@@ -254,7 +252,7 @@ class ErrorHandler extends Component
 			'lines' => $lines,
 			'begin' => $begin,
 			'end' => $end,
-		));
+		]);
 	}
 
 	/**
@@ -264,7 +262,7 @@ class ErrorHandler extends Component
 	public function renderRequest()
 	{
 		$request = '';
-		foreach (array('_GET', '_POST', '_SERVER', '_FILES', '_COOKIE', '_SESSION', '_ENV') as $name) {
+		foreach (['_GET', '_POST', '_SERVER', '_FILES', '_COOKIE', '_SESSION', '_ENV'] as $name) {
 			if (!empty($GLOBALS[$name])) {
 				$request .= '$' . $name . ' = ' . var_export($GLOBALS[$name], true) . ";\n\n";
 			}
@@ -300,14 +298,14 @@ class ErrorHandler extends Component
 	 */
 	public function createServerInformationLink()
 	{
-		static $serverUrls = array(
+		static $serverUrls = [
-			'http://httpd.apache.org/' => array('apache'),
+			'http://httpd.apache.org/' => ['apache'],
-			'http://nginx.org/' => array('nginx'),
+			'http://nginx.org/' => ['nginx'],
-			'http://lighttpd.net/' => array('lighttpd'),
+			'http://lighttpd.net/' => ['lighttpd'],
-			'http://gwan.com/' => array('g-wan', 'gwan'),
+			'http://gwan.com/' => ['g-wan', 'gwan'],
-			'http://iis.net/' => array('iis', 'services'),
+			'http://iis.net/' => ['iis', 'services'],
-			'http://php.net/manual/en/features.commandline.webserver.php' => array('development'),
+			'http://php.net/manual/en/features.commandline.webserver.php' => ['development'],
-		);
+		];
 		if (isset($_SERVER['SERVER_SOFTWARE'])) {
 			foreach ($serverUrls as $url => $keywords) {
 				foreach ($keywords as $keyword) {

framework/yii/base/Exception.php

@@ -39,12 +39,12 @@ class Exception extends \Exception implements Arrayable
 	 */
 	protected function toArrayRecursive($exception)
 	{
-		$array = array(
+		$array = [
 			'type' => get_class($exception),
 			'name' => $exception instanceof self ? $exception->getName() : 'Exception',
 			'message' => $exception->getMessage(),
 			'code' => $exception->getCode(),
-		);
+		];
 		if (($prev = $exception->getPrevious()) !== null) {
 			$array['previous'] = $this->toArrayRecursive($prev);
 		}

framework/yii/base/Formatter.php

@@ -42,7 +42,7 @@ class Formatter extends Component
 	public $nullDisplay;
 	/**
 	 * @var array the text to be displayed when formatting a boolean value. The first element corresponds
-	 * to the text display for false, the second element for true. Defaults to `array('No', 'Yes')`.
+	 * to the text display for false, the second element for true. Defaults to `['No', 'Yes']`.
 	 */
 	public $booleanFormat;
 	/**
@@ -63,7 +63,7 @@ class Formatter extends Component
 	public function init()
 	{
 		if (empty($this->booleanFormat)) {
-			$this->booleanFormat = array(Yii::t('yii', 'No'), Yii::t('yii', 'Yes'));
+			$this->booleanFormat = [Yii::t('yii', 'No'), Yii::t('yii', 'Yes')];
 		}
 		if ($this->nullDisplay === null) {
 			$this->nullDisplay = Yii::t('yii', '(not set)');
@@ -79,7 +79,7 @@ class Formatter extends Component
 	 * @param string|array $format the format of the value, e.g., "html", "text". To specify additional
 	 * parameters of the formatting method, you may use an array. The first element of the array
 	 * specifies the format name, while the rest of the elements will be used as the parameters to the formatting
-	 * method. For example, a format of `array('date', 'Y-m-d')` will cause the invocation of `asDate($value, 'Y-m-d')`.
+	 * method. For example, a format of `['date', 'Y-m-d']` will cause the invocation of `asDate($value, 'Y-m-d')`.
 	 * @return string the formatting result
 	 * @throws InvalidParamException if the type is not supported by this class.
 	 */
@@ -94,11 +94,11 @@ class Formatter extends Component
 			$params = $format;
 			$format = $f;
 		} else {
-			$params = array($value);
+			$params = [$value];
 		}
 		$method = 'as' . $format;
 		if (method_exists($this, $method)) {
-			return call_user_func_array(array($this, $method), $params);
+			return call_user_func_array([$this, $method], $params);
 		} else {
 			throw new InvalidParamException("Unknown type: $format");
 		}

framework/yii/base/InlineAction.php

@@ -31,7 +31,7 @@ class InlineAction extends Action
 	 * @param string $actionMethod the controller method that  this inline action is associated with
 	 * @param array $config name-value pairs that will be used to initialize the object properties
 	 */
-	public function __construct($id, $controller, $actionMethod, $config = array())
+	public function __construct($id, $controller, $actionMethod, $config = [])
 	{
 		$this->actionMethod = $actionMethod;
 		parent::__construct($id, $controller, $config);
@@ -50,6 +50,6 @@ class InlineAction extends Action
 		if (Yii::$app->requestedParams === null) {
 			Yii::$app->requestedParams = $args;
 		}
-		return call_user_func_array(array($this->controller, $this->actionMethod), $args);
+		return call_user_func_array([$this->controller, $this->actionMethod], $args);
 	}
 }

framework/yii/base/Model.php

@@ -90,12 +90,12 @@ class Model extends Component implements IteratorAggregate, ArrayAccess
 	 * Each rule is an array with the following structure:
 	 *
 	 * ~~~
-	 * array(
+	 * [
 	 *     'attribute list',
 	 *     'validator type',
 	 *     'on' => 'scenario name',
 	 *     ...other parameters...
-	 * )
+	 * ]
 	 * ~~~
 	 *
 	 * where
@@ -126,18 +126,18 @@ class Model extends Component implements IteratorAggregate, ArrayAccess
 	 * Below are some examples:
 	 *
 	 * ~~~
-	 * array(
+	 * [
 	 *     // built-in "required" validator
-	 *     array('username', 'required'),
+	 *     ['username', 'required'],
 	 *     // built-in "string" validator customized with "min" and "max" properties
-	 *     array('username', 'string', 'min' => 3, 'max' => 12),
+	 *     ['username', 'string', 'min' => 3, 'max' => 12],
 	 *     // built-in "compare" validator that is used in "register" scenario only
-	 *     array('password', 'compare', 'compareAttribute' => 'password2', 'on' => 'register'),
+	 *     ['password', 'compare', 'compareAttribute' => 'password2', 'on' => 'register'],
 	 *     // an inline validator defined via the "authenticate()" method in the model class
-	 *     array('password', 'authenticate', 'on' => 'login'),
+	 *     ['password', 'authenticate', 'on' => 'login'],
 	 *     // a validator of class "DateRangeValidator"
-	 *     array('dateRange', 'DateRangeValidator'),
+	 *     ['dateRange', 'DateRangeValidator'],
-	 * );
+	 * ];
 	 * ~~~
 	 *
 	 * Note, in order to inherit rules defined in the parent class, a child class needs to
@@ -148,7 +148,7 @@ class Model extends Component implements IteratorAggregate, ArrayAccess
 	 */
 	public function rules()
 	{
-		return array();
+		return [];
 	}
 
 	/**
@@ -157,11 +157,11 @@ class Model extends Component implements IteratorAggregate, ArrayAccess
 	 * The returned array should be in the following format:
 	 *
 	 * ~~~
-	 * array(
+	 * [
-	 *     'scenario1' => array('attribute11', 'attribute12', ...),
+	 *     'scenario1' => ['attribute11', 'attribute12', ...],
-	 *     'scenario2' => array('attribute21', 'attribute22', ...),
+	 *     'scenario2' => ['attribute21', 'attribute22', ...],
 	 *     ...
-	 * )
+	 * ]
 	 * ~~~
 	 *
 	 * By default, an active attribute that is considered safe and can be massively assigned.
@@ -177,8 +177,8 @@ class Model extends Component implements IteratorAggregate, ArrayAccess
 	 */
 	public function scenarios()
 	{
-		$scenarios = array();
+		$scenarios = [];
-		$defaults = array();
+		$defaults = [];
 		/** @var $validator Validator */
 		foreach ($this->getValidators() as $validator) {
 			if (empty($validator->on)) {
@@ -231,7 +231,7 @@ class Model extends Component implements IteratorAggregate, ArrayAccess
 	public function attributes()
 	{
 		$class = new ReflectionClass($this);
-		$names = array();
+		$names = [];
 		foreach ($class->getProperties(\ReflectionProperty::IS_PUBLIC) as $property) {
 			$name = $property->getName();
 			if (!$property->isStatic()) {
@@ -259,7 +259,7 @@ class Model extends Component implements IteratorAggregate, ArrayAccess
 	 */
 	public function attributeLabels()
 	{
-		return array();
+		return [];
 	}
 
 	/**
@@ -367,7 +367,7 @@ class Model extends Component implements IteratorAggregate, ArrayAccess
 	 */
 	public function getActiveValidators($attribute = null)
 	{
-		$validators = array();
+		$validators = [];
 		$scenario = $this->getScenario();
 		/** @var $validator Validator */
 		foreach ($this->getValidators() as $validator) {
@@ -472,15 +472,15 @@ class Model extends Component implements IteratorAggregate, ArrayAccess
 	 * Note that when returning errors for all attributes, the result is a two-dimensional array, like the following:
 	 *
 	 * ~~~
-	 * array(
+	 * [
-	 *     'username' => array(
+	 *     'username' => [
 	 *         'Username is required.',
 	 *         'Username must contain only word characters.',
-	 *     ),
+	 *     ],
-	 *     'email' => array(
+	 *     'email' => [
 	 *         'Email address is invalid.',
-	 *     )
+	 *     ]
-	 * )
+	 * ]
 	 * ~~~
 	 *
 	 * @see getFirstErrors
@@ -489,9 +489,9 @@ class Model extends Component implements IteratorAggregate, ArrayAccess
 	public function getErrors($attribute = null)
 	{
 		if ($attribute === null) {
-			return $this->_errors === null ? array() : $this->_errors;
+			return $this->_errors === null ? [] : $this->_errors;
 		} else {
-			return isset($this->_errors[$attribute]) ? $this->_errors[$attribute] : array();
+			return isset($this->_errors[$attribute]) ? $this->_errors[$attribute] : [];
 		}
 	}
 
@@ -504,9 +504,9 @@ class Model extends Component implements IteratorAggregate, ArrayAccess
 	public function getFirstErrors()
 	{
 		if (empty($this->_errors)) {
-			return array();
+			return [];
 		} else {
-			$errors = array();
+			$errors = [];
 			foreach ($this->_errors as $attributeErrors) {
 				if (isset($attributeErrors[0])) {
 					$errors[] = $attributeErrors[0];
@@ -545,7 +545,7 @@ class Model extends Component implements IteratorAggregate, ArrayAccess
 	public function clearErrors($attribute = null)
 	{
 		if ($attribute === null) {
-			$this->_errors = array();
+			$this->_errors = [];
 		} else {
 			unset($this->_errors[$attribute]);
 		}
@@ -572,9 +572,9 @@ class Model extends Component implements IteratorAggregate, ArrayAccess
 	 * @param array $except list of attributes whose value should NOT be returned.
 	 * @return array attribute values (name => value).
 	 */
-	public function getAttributes($names = null, $except = array())
+	public function getAttributes($names = null, $except = [])
 	{
-		$values = array();
+		$values = [];
 		if ($names === null) {
 			$names = $this->attributes();
 		}
@@ -657,9 +657,9 @@ class Model extends Component implements IteratorAggregate, ArrayAccess
 		$scenario = $this->getScenario();
 		$scenarios = $this->scenarios();
 		if (!isset($scenarios[$scenario])) {
-			return array();
+			return [];
 		}
-		$attributes = array();
+		$attributes = [];
 		foreach ($scenarios[$scenario] as $attribute) {
 			if ($attribute[0] !== '!') {
 				$attributes[] = $attribute;
@@ -677,7 +677,7 @@ class Model extends Component implements IteratorAggregate, ArrayAccess
 		$scenario = $this->getScenario();
 		$scenarios = $this->scenarios();
 		if (!isset($scenarios[$scenario])) {
-			return array();
+			return [];
 		}
 		$attributes = $scenarios[$scenario];
 		foreach ($attributes as $i => $attribute) {

framework/yii/base/Module.php

@@ -39,11 +39,11 @@ abstract class Module extends Component
 	/**
 	 * @var array custom module parameters (name => value).
 	 */
-	public $params = array();
+	public $params = [];
 	/**
 	 * @var array the IDs of the components or modules that should be preloaded when this module is created.
 	 */
-	public $preload = array();
+	public $preload = [];
 	/**
 	 * @var string an ID that uniquely identifies this module among other modules which have the same [[module|parent]].
 	 */
@@ -68,16 +68,16 @@ abstract class Module extends Component
 	 * in the array are used to initialize the corresponding controller properties. For example,
 	 *
 	 * ~~~
-	 * array(
+	 * [
 	 *   'account' => '@app/controllers/UserController',
-	 *   'article' => array(
+	 *   'article' => [
 	 *      'class' => '@app/controllers/PostController',
 	 *      'pageTitle' => 'something new',
-	 *   ),
+	 *   ],
-	 * )
+	 * ]
 	 * ~~~
 	 */
-	public $controllerMap = array();
+	public $controllerMap = [];
 	/**
 	 * @var string the namespace that controller classes are in. If not set,
 	 * it will use the "controllers" sub-namespace under the namespace of this module.
@@ -113,11 +113,11 @@ abstract class Module extends Component
 	/**
 	 * @var array child modules of this module
 	 */
-	private $_modules = array();
+	private $_modules = [];
 	/**
 	 * @var array components registered under this module
 	 */
-	private $_components = array();
+	private $_components = [];
 
 	/**
 	 * Constructor.
@@ -125,7 +125,7 @@ abstract class Module extends Component
 	 * @param Module $parent the parent module (if any)
 	 * @param array $config name-value pairs that will be used to initialize the object properties
 	 */
-	public function __construct($id, $parent = null, $config = array())
+	public function __construct($id, $parent = null, $config = [])
 	{
 		$this->id = $id;
 		$this->module = $parent;
@@ -312,10 +312,10 @@ abstract class Module extends Component
 	 * For example,
 	 *
 	 * ~~~
-	 * array(
+	 * [
 	 *	'@models' => '@app/models', // an existing alias
 	 *	'@backend' => __DIR__ . '/../backend',  // a directory
-	 * )
+	 * ]
 	 * ~~~
 	 */
 	public function setAliases($aliases)
@@ -401,7 +401,7 @@ abstract class Module extends Component
 	public function getModules($loadedOnly = false)
 	{
 		if ($loadedOnly) {
-			$modules = array();
+			$modules = [];
 			foreach ($this->_modules as $module) {
 				if ($module instanceof Module) {
 					$modules[] = $module;
@@ -426,15 +426,13 @@ abstract class Module extends Component
 	 * The following is an example for registering two sub-modules:
 	 *
 	 * ~~~
-	 * array(
+	 * [
-	 *     'comment' => array(
+	 *     'comment' => [
 	 *         'class' => 'app\modules\comment\CommentModule',
 	 *         'db' => 'db',
-	 *     ),
+	 *     ],
-	 *     'booking' => array(
+	 *     'booking' => ['class' => 'app\modules\booking\BookingModule'],
-	 *         'class' => 'app\modules\booking\BookingModule',
+	 * ]
-	 *     ),
-	 * )
 	 * ~~~
 	 *
 	 * @param array $modules modules (id => module configuration or instances)
@@ -506,7 +504,7 @@ abstract class Module extends Component
 	public function getComponents($loadedOnly = false)
 	{
 		if ($loadedOnly) {
-			$components = array();
+			$components = [];
 			foreach ($this->_components as $component) {
 				if ($component instanceof Component) {
 					$components[] = $component;
@@ -531,16 +529,16 @@ abstract class Module extends Component
 	 * The following is an example for setting two components:
 	 *
 	 * ~~~
-	 * array(
+	 * [
-	 *     'db' => array(
+	 *     'db' => [
 	 *         'class' => 'yii\db\Connection',
 	 *         'dsn' => 'sqlite:path/to/file.db',
-	 *     ),
+	 *     ],
-	 *     'cache' => array(
+	 *     'cache' => [
 	 *         'class' => 'yii\caching\DbCache',
 	 *         'db' => 'db',
-	 *     ),
+	 *     ],
-	 * )
+	 * ]
 	 * ~~~
 	 *
 	 * @param array $components components (id => component configuration or instance)
@@ -582,7 +580,7 @@ abstract class Module extends Component
 	 * @return mixed the result of the action.
 	 * @throws InvalidRouteException if the requested route cannot be resolved into an action successfully
 	 */
-	public function runAction($route, $params = array())
+	public function runAction($route, $params = [])
 	{
 		$parts = $this->createController($route);
 		if (is_array($parts)) {
@@ -646,7 +644,7 @@ abstract class Module extends Component
 			}
 		}
 
-		return isset($controller) ? array($controller, $route) : false;
+		return isset($controller) ? [$controller, $route] : false;
 	}
 
 	/**

framework/yii/base/Object.php

@@ -38,7 +38,7 @@ class Object implements Arrayable
 	 *
 	 * @param array $config name-value pairs that will be used to initialize the object properties
 	 */
-	public function __construct($config = array())
+	public function __construct($config = [])
 	{
 		if (!empty($config)) {
 			Yii::configure($this, $config);

framework/yii/base/Theme.php

@@ -21,7 +21,7 @@ use yii\helpers\FileHelper;
  * with its themed version if part of its path matches one of the keys in [[pathMap]].
  * Then the matched part will be replaced with the corresponding array value.
  *
- * For example, if [[pathMap]] is `array('/web/views' => '/web/themes/basic')`,
+ * For example, if [[pathMap]] is `['/web/views' => '/web/themes/basic']`,
  * then the themed version for a view file `/web/views/site/index.php` will be
  * `/web/themes/basic/site/index.php`.
  *
@@ -29,12 +29,12 @@ use yii\helpers\FileHelper;
  * component like the following:
  *
  * ~~~
- * 'view' => array(
+ * 'view' => [
- *     'theme' => array(
+ *     'theme' => [
  *         'basePath' => '@webroot/themes/basic',
  *         'baseUrl' => '@web/themes/basic',
- *     ),
+ *     ],
- * ),
+ * ],
  * ~~~
  *
  * The above configuration specifies a theme located under the "themes/basic" directory of the Web folder
@@ -76,12 +76,12 @@ class Theme extends Component
 		if (empty($this->pathMap)) {
 			if ($this->basePath !== null) {
 				$this->basePath = Yii::getAlias($this->basePath);
-				$this->pathMap = array(Yii::$app->getBasePath() => $this->basePath);
+				$this->pathMap = [Yii::$app->getBasePath() => $this->basePath];
 			} else {
 				throw new InvalidConfigException('The "basePath" property must be set.');
 			}
 		}
-		$paths = array();
+		$paths = [];
 		foreach ($this->pathMap as $from => $to) {
 			$from = FileHelper::normalizePath(Yii::getAlias($from));
 			$to = FileHelper::normalizePath(Yii::getAlias($to));

framework/yii/base/View.php

@@ -96,21 +96,17 @@ class View extends Component
 	/**
 	 * @var mixed custom parameters that are shared among view templates.
 	 */
-	public $params = array();
+	public $params = [];
 	/**
 	 * @var array a list of available renderers indexed by their corresponding supported file extensions.
 	 * Each renderer may be a view renderer object or the configuration for creating the renderer object.
 	 * For example, the following configuration enables both Smarty and Twig view renderers:
 	 *
 	 * ~~~
-	 * array(
+	 * [
-	 *     'tpl' => array(
+	 *     'tpl' => ['class' => 'yii\smarty\ViewRenderer'],
-	 *         'class' => 'yii\smarty\ViewRenderer',
+	 *     'twig' => ['class' => 'yii\twig\ViewRenderer'],
-	 *      ),
+	 * ]
-	 *     'twig' => array(
-	 *         'class' => 'yii\twig\ViewRenderer',
-	 *     ),
-	 * )
 	 * ~~~
 	 *
 	 * If no renderer is available for the given view file, the view file will be treated as a normal PHP
@@ -134,19 +130,19 @@ class View extends Component
 	 * is used internally to implement the content caching feature. Do not modify it directly.
 	 * @internal
 	 */
-	public $cacheStack = array();
+	public $cacheStack = [];
 	/**
 	 * @var array a list of placeholders for embedding dynamic contents. This property
 	 * is used internally to implement the content caching feature. Do not modify it directly.
 	 * @internal
 	 */
-	public $dynamicPlaceholders = array();
+	public $dynamicPlaceholders = [];
 	/**
 	 * @var AssetBundle[] list of the registered asset bundles. The keys are the bundle names, and the values
 	 * are the registered [[AssetBundle]] objects.
 	 * @see registerAssetBundle
 	 */
-	public $assetBundles = array();
+	public $assetBundles = [];
 	/**
 	 * @var string the page title
 	 */
@@ -214,7 +210,7 @@ class View extends Component
 	 * @throws InvalidParamException if the view cannot be resolved or the view file does not exist.
 	 * @see renderFile
 	 */
-	public function render($view, $params = array())
+	public function render($view, $params = [])
 	{
 		if ($this->context instanceof Controller) {
 			return $this->context->renderPartial($view, $params);
@@ -244,7 +240,7 @@ class View extends Component
 	 * @return string the rendering result
 	 * @throws InvalidParamException if the view file does not exist
 	 */
-	public function renderFile($viewFile, $params = array(), $context = null)
+	public function renderFile($viewFile, $params = [], $context = null)
 	{
 		$viewFile = Yii::getAlias($viewFile);
 		if ($this->theme !== null) {
@@ -328,7 +324,7 @@ class View extends Component
 	 * @param array $_params_ the parameters (name-value pairs) that will be extracted and made available in the view file.
 	 * @return string the rendering result
 	 */
-	public function renderPhpFile($_file_, $_params_ = array())
+	public function renderPhpFile($_file_, $_params_ = [])
 	{
 		ob_start();
 		ob_implicit_flush(false);
@@ -393,11 +389,11 @@ class View extends Component
 	 */
 	public function beginBlock($id, $renderInPlace = false)
 	{
-		return Block::begin(array(
+		return Block::begin([
 			'id' => $id,
 			'renderInPlace' => $renderInPlace,
 			'view' => $this,
-		));
+		]);
 	}
 
 	/**
@@ -425,13 +421,13 @@ class View extends Component
 	 * @return ContentDecorator the ContentDecorator widget instance
 	 * @see ContentDecorator
 	 */
-	public function beginContent($viewFile, $params = array())
+	public function beginContent($viewFile, $params = [])
 	{
-		return ContentDecorator::begin(array(
+		return ContentDecorator::begin([
 			'viewFile' => $viewFile,
 			'params' => $params,
 			'view' => $this,
-		));
+		]);
 	}
 
 	/**
@@ -461,7 +457,7 @@ class View extends Component
 	 * @return boolean whether you should generate the content for caching.
 	 * False if the cached version is available.
 	 */
-	public function beginCache($id, $properties = array())
+	public function beginCache($id, $properties = [])
 	{
 		$properties['id'] = $id;
 		$properties['view'] = $this;
@@ -526,11 +522,11 @@ class View extends Component
 		foreach(array_keys($this->assetBundles) as $bundle) {
 			$this->registerAssetFiles($bundle);
 		}
-		echo strtr($content, array(
+		echo strtr($content, [
 			self::PH_HEAD => $this->renderHeadHtml(),
 			self::PH_BODY_BEGIN => $this->renderBodyBeginHtml(),
 			self::PH_BODY_END => $this->renderBodyEndHtml(),
-		));
+		]);
 
 		unset(
 			$this->metaTags,
@@ -670,7 +666,7 @@ class View extends Component
 	 * $css as the key. If two CSS code blocks are registered with the same key, the latter
 	 * will overwrite the former.
 	 */
-	public function registerCss($css, $options = array(), $key = null)
+	public function registerCss($css, $options = [], $key = null)
 	{
 		$key = $key ?: md5($css);
 		$this->css[$key] = Html::style($css, $options);
@@ -684,7 +680,7 @@ class View extends Component
 	 * $url as the key. If two CSS files are registered with the same key, the latter
 	 * will overwrite the former.
 	 */
-	public function registerCssFile($url, $options = array(), $key = null)
+	public function registerCssFile($url, $options = [], $key = null)
 	{
 		$key = $key ?: $url;
 		$this->cssFiles[$key] = Html::cssFile($url, $options);
@@ -732,7 +728,7 @@ class View extends Component
 	 * $url as the key. If two JS files are registered with the same key, the latter
 	 * will overwrite the former.
 	 */
-	public function registerJsFile($url, $options = array(), $key = null)
+	public function registerJsFile($url, $options = [], $key = null)
 	{
 		$position = isset($options['position']) ? $options['position'] : self::POS_END;
 		unset($options['position']);
@@ -747,15 +743,15 @@ class View extends Component
 	 */
 	protected function renderHeadHtml()
 	{
-		$lines = array();
+		$lines = [];
 		if (!empty($this->metaTags)) {
 			$lines[] = implode("\n", $this->metaTags);
 		}
 
 		$request = Yii::$app->getRequest();
 		if ($request instanceof \yii\web\Request && $request->enableCsrfValidation) {
-			$lines[] = Html::tag('meta', '', array('name' => 'csrf-var', 'content' => $request->csrfVar));
+			$lines[] = Html::tag('meta', '', ['name' => 'csrf-var', 'content' => $request->csrfVar]);
-			$lines[] = Html::tag('meta', '', array('name' => 'csrf-token', 'content' => $request->getCsrfToken()));
+			$lines[] = Html::tag('meta', '', ['name' => 'csrf-token', 'content' => $request->getCsrfToken()]);
 		}
 
 		if (!empty($this->linkTags)) {
@@ -771,7 +767,7 @@ class View extends Component
 			$lines[] = implode("\n", $this->jsFiles[self::POS_HEAD]);
 		}
 		if (!empty($this->js[self::POS_HEAD])) {
-			$lines[] = Html::script(implode("\n", $this->js[self::POS_HEAD]), array('type' => 'text/javascript'));
+			$lines[] = Html::script(implode("\n", $this->js[self::POS_HEAD]), ['type' => 'text/javascript']);
 		}
 		return empty($lines) ? '' : implode("\n", $lines);
 	}
@@ -783,12 +779,12 @@ class View extends Component
 	 */
 	protected function renderBodyBeginHtml()
 	{
-		$lines = array();
+		$lines = [];
 		if (!empty($this->jsFiles[self::POS_BEGIN])) {
 			$lines[] = implode("\n", $this->jsFiles[self::POS_BEGIN]);
 		}
 		if (!empty($this->js[self::POS_BEGIN])) {
-			$lines[] = Html::script(implode("\n", $this->js[self::POS_BEGIN]), array('type' => 'text/javascript'));
+			$lines[] = Html::script(implode("\n", $this->js[self::POS_BEGIN]), ['type' => 'text/javascript']);
 		}
 		return empty($lines) ? '' : implode("\n", $lines);
 	}
@@ -800,16 +796,16 @@ class View extends Component
 	 */
 	protected function renderBodyEndHtml()
 	{
-		$lines = array();
+		$lines = [];
 		if (!empty($this->jsFiles[self::POS_END])) {
 			$lines[] = implode("\n", $this->jsFiles[self::POS_END]);
 		}
 		if (!empty($this->js[self::POS_END])) {
-			$lines[] = Html::script(implode("\n", $this->js[self::POS_END]), array('type' => 'text/javascript'));
+			$lines[] = Html::script(implode("\n", $this->js[self::POS_END]), ['type' => 'text/javascript']);
 		}
 		if (!empty($this->js[self::POS_READY])) {
 			$js = "jQuery(document).ready(function(){\n" . implode("\n", $this->js[self::POS_READY]) . "\n});";
-			$lines[] = Html::script($js, array('type' => 'text/javascript'));
+			$lines[] = Html::script($js, ['type' => 'text/javascript']);
 		}
 		return empty($lines) ? '' : implode("\n", $lines);
 	}

framework/yii/base/ViewEvent.php

@@ -36,7 +36,7 @@ class ViewEvent extends Event
 	 * @param string $viewFile the view file path that is being rendered by [[View::renderFile()]].
 	 * @param array $config name-value pairs that will be used to initialize the object properties
 	 */
-	public function __construct($viewFile, $config = array())
+	public function __construct($viewFile, $config = [])
 	{
 		$this->viewFile = $viewFile;
 		parent::__construct($config);

framework/yii/base/Widget.php

@@ -32,7 +32,7 @@ class Widget extends Component
 	 * is maintained by [[begin()]] and [[end()]] methods.
 	 * @internal
 	 */
-	public static $_stack = array();
+	public static $_stack = [];
 
 	
 	/**
@@ -42,7 +42,7 @@ class Widget extends Component
 	 * @param array $config name-value pairs that will be used to initialize the object properties
 	 * @return Widget the newly created widget instance
 	 */
-	public static function begin($config = array())
+	public static function begin($config = [])
 	{
 		$config['class'] = get_called_class();
 		/** @var Widget $widget */
@@ -78,7 +78,7 @@ class Widget extends Component
 	 * @param array $config name-value pairs that will be used to initialize the object properties
 	 * @return string the rendering result of the widget.
 	 */
-	public static function widget($config = array())
+	public static function widget($config = [])
 	{
 		ob_start();
 		ob_implicit_flush(false);
@@ -165,7 +165,7 @@ class Widget extends Component
 	 * @return string the rendering result.
 	 * @throws InvalidParamException if the view file does not exist.
 	 */
-	public function render($view, $params = array())
+	public function render($view, $params = [])
 	{
 		$viewFile = $this->findViewFile($view);
 		return $this->getView()->renderFile($viewFile, $params, $this);
@@ -178,7 +178,7 @@ class Widget extends Component
 	 * @return string the rendering result.
 	 * @throws InvalidParamException if the view file does not exist.
 	 */
-	public function renderFile($file, $params = array())
+	public function renderFile($file, $params = [])
 	{
 		return $this->getView()->renderFile($file, $params, $this);
 	}

framework/yii/behaviors/AutoTimestamp.php

@@ -21,11 +21,9 @@ use yii\db\ActiveRecord;
  * ~~~
  * public function behaviors()
  * {
- *     return array(
+ *     return [
- *         'timestamp' => array(
+ *         'timestamp' => ['class' => 'yii\behaviors\AutoTimestamp'],
- *             'class' => 'yii\behaviors\AutoTimestamp',
+ *     ];
- *         ),
- *     );
  * }
  * ~~~
  *
@@ -46,10 +44,10 @@ class AutoTimestamp extends Behavior
 	 * The default setting is to update the `create_time` attribute upon AR insertion,
 	 * and update the `update_time` attribute upon AR updating.
 	 */
-	public $attributes = array(
+	public $attributes = [
 		ActiveRecord::EVENT_BEFORE_INSERT => 'create_time',
 		ActiveRecord::EVENT_BEFORE_UPDATE => 'update_time',
-	);
+	];
 	/**
 	 * @var \Closure|Expression The expression that will be used for generating the timestamp.
 	 * This can be either an anonymous function that returns the timestamp value,
@@ -78,7 +76,7 @@ class AutoTimestamp extends Behavior
 	 */
 	public function updateTimestamp($event)
 	{
-		$attributes = isset($this->attributes[$event->name]) ? (array)$this->attributes[$event->name] : array();
+		$attributes = isset($this->attributes[$event->name]) ? (array)$this->attributes[$event->name] : [];
 		if (!empty($attributes)) {
 			$timestamp = $this->evaluateTimestamp();
 			foreach ($attributes as $attribute) {